Finding the Third Proportional to 121.50 and 126
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Solution
The third proportional to 121.50 and 126 is: 130.67
Step by Step Solution
- Step 1: Write the proportion equation
121.50 : 126 = 126 : x - Step 2: Convert to fraction form
121.50/126 = 126/x - Step 3: Cross multiply
121.50x = 126 × 126 - Step 4: Simplify right side
121.50x = 15,876 - Step 5: Solve for x
x = 15,876/121.50 - Step 6: Final answer
x = 130.67
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These problems maintain the same ratio (1.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.