Organize the problem by multiplying the given information by the conversion factor. There are 2.2046 pounds for every one kilogram. It should look like this: 90 kilograms x 2.2046 pounds/1 kilogram.
Eliminate kilograms from the problem to ensure only pounds are left in the final answer. It should look like this: 90 x 2.2046 pounds/1.
Multiply 90 x 2.2046 pounds to find the solution. Be sure to include the unit, pounds, with the answer.