Finding the Fourth Proportional to 122.49, 168.99 and 80.97
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Solution
The fourth proportional to 122.49, 168.99 and 80.97 is: 111.71
Step by Step Solution
- Step 1: Write the proportion equation
122.49 : 168.99 = 80.97 : x - Step 2: Convert to fraction form
122.49/168.99 = 80.97/x - Step 3: Cross multiply
122.49x = 168.99 × 80.97 - Step 4: Simplify right side
122.49x = 13,683.12 - Step 5: Solve for x
x = 13,683.12/122.49 - Step 6: Final answer
x = 111.71
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.