LetsRun math whizzes. Does anyone know how to convert pounds to kilograms?

If you're American you make people convert to what you know.

No need to learn any metric stuff or other languages.

Redneck Willie wrote:

Here's your answer.

If the 185 pound guy was made of gold he'd be worth $3,140,438.11

You're welcome!

The golden lady in Goldfinger was dead.

Probably P wrote:

The golden lady in Goldfinger was dead.

The actress died. This was believed even thought she appeared in several subsequent movies.

In 2003 she appeared on TV to announce it was an urban legend.

She weighs 54 kilos.

First, make yourself an equation. The equation will have a fraction on each side. The first fraction will be the known ratio of 1 kilogram to the number of pounds in 1 kilogram. You can find this or any other ratio you need on a unit conversion chart. The second fraction will line up with the units in your first fraction. If kilograms is on top in the first fraction, then the second fraction needs kilograms on the top as well. Let x be the unknown number of kilograms. Let the denominator be the number of pounds.

1 kg / 2.20462 lbs = x kg / 185 lbs

Second, cross multiply.

2.20462x = 185

Third, divide both sides by 2.20462 to isolate the variable.

x = 185/2.20462

x = 83.9146882

84 kilograms

This is a very easy problem, but using algebra to solve an equation like this will let you solve problems that aren't so neat and clean.

RunLessDoMoreMath wrote:

First, make yourself an equation. The equation will have a fraction on each side. The first fraction will be the known ratio of 1 kilogram to the number of pounds in 1 kilogram. You can find this or any other ratio you need on a unit conversion chart. The second fraction will line up with the units in your first fraction. If kilograms is on top in the first fraction, then the second fraction needs kilograms on the top as well. Let x be the unknown number of kilograms. Let the denominator be the number of pounds.

1 kg / 2.20462 lbs = x kg / 185 lbs

Second, cross multiply.

2.20462x = 185

Third, divide both sides by 2.20462 to isolate the variable.

x = 185/2.20462

x = 83.9146882

84 kilograms

This is a very easy problem, but using algebra to solve an equation like this will let you solve problems that aren't so neat and clean.

That is great thanks. But say you want to know how many kilograms that Ny lady weighs. How do you do that?

Not enough information. How far is this man from the earths center of gravity? Is this man even on earth? Pounds only measure the amount of force gravity exerts on an object.

What if man did not weight even 185 pounds. What if he weighed 184.689 pounds. Would you need to do calculus or algorithms on that?

Better yet, do grams:

1 g / 0.00220462 lb = x g / 910 lbs

0.00220462x = 910

x = 412769.5 grams

RunnLessDoMoreMath wrote:

Better yet, do grams:

1 g / 0.00220462 lb = x g / 910 lbs

0.00220462x = 910

x = 412769.5 grams

That gram calculation could vary widely depending on whether she took dump or not. Like maybe a kilogram worth. I would not want to inspect her poop.

The simplest answer is to take the item you wish weighed to Canada. When you cross the border, it is instantly converted from pounds to kilograms.

vxcv wrote:

The number you need to know is 2.205.

Pounds to kgs, divide by it.

Kgs to pounds, multiply by it.

You almost got away with it: the conversion factor is 1.54.

Chewbaccca wrote:

Does anyone know how to convert pounds to kilograms?

No

Hold on one second....

Are we talking about pound-mass or pound-force? They are as different as a slug from a ton.

I am confused by one step you took:

RunLessDoMoreMath wrote:

1 kg / 2.20462 lbs = x kg / 185 lbs

Second, cross multiply.

2.20462x = 185

How did you do that?

Whenever you have an equation (x = 1+2; 2y = 4; 1/2w = 8; etc.) that has a fraction on both sides, you want to get rid of the denominators to simplify the equation. First, remember the first rule of solving algebraic equations is to do the same thing to both sides. In order to get rid of a denominator you need to multiply both sides by the inverse of the denominator. This will give you the same numerator and denominator on one side, which is the same as one, or just the variable.

Example

1x/2 = 8

Multiply both sides by 2

2(1x/2) = 2(8)

2x/2 = 16

x = 16

Cross multiply is a quick and easy reminder that if you have two fractions in an equation, you can just multiply the first numerator by the second denominator, and the first denominator by the second numerator. It's confusing because you're skipping a few steps of the actual algebra.

Example Not Skipping Steps

3w/5 = 9/5

5(3w/5) = 5(9/5)

15w/5 = 45/5

3w = 9

w = 3

Example Cross Multiple

3w/5 = 9/5

15w = 45

w = 3

Ummm...what the heck is a denominator?

This is insane. It's going to take a while for all of this to digest. So how does this apply to figuring out how many kilograms are in a 910-pound woman in NY?

Old Man Winter wrote:

This is insane. It's going to take a while for all of this to digest. So how does this apply to figuring out how many kilograms are in a 910-pound woman in NY?

It doesn't apply at all. First she has to die so an autopsy can be performed to find the kilograms.