To convert miles to kilometers, you can use the conversion factor that 1 mile is equal to 1.60934 kilometers. Here are the step-by-step instructions to convert 120 miles to kilometers:

Step 1: Write down the given value:

Distance in miles = 120 miles

Step 2: Set up the conversion factor:

1 mile = 1.60934 kilometers

Step 3: Multiply the given value by the conversion factor:

120 miles × 1.60934 kilometers/mile

Step 4: Perform the multiplication:

120 × 1.60934 = 193.12168 kilometers

Step 5: Round off the answer to an appropriate number of decimal places:

Since kilometers are typically rounded to two decimal places, the final answer is:

120 miles is approximately equal to 193.12 kilometers.

Therefore, 120 miles is approximately equal to 193.12 kilometers.