One kilogram is equal to 2.2 pounds, so the conversion value is 2.2.
To convert pounds to kilograms, divide the original value by 2.2. One hundred seventy-two divided by 2.2 equals 78.18. This value rounds to an even 78.
For the final step, label the answer from step 2 with the correct units. The result of the formula shows that 172 pounds is equal to about 78 kilograms.