Finding the Fourth Proportional to 132.13, 197.99 and 77.99
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Solution
The fourth proportional to 132.13, 197.99 and 77.99 is: 116.87
Step by Step Solution
- Step 1: Write the proportion equation
132.13 : 197.99 = 77.99 : x - Step 2: Convert to fraction form
132.13/197.99 = 77.99/x - Step 3: Cross multiply
132.13x = 197.99 × 77.99 - Step 4: Simplify right side
132.13x = 15,440.85 - Step 5: Solve for x
x = 15,440.85/132.13 - Step 6: Final answer
x = 116.87
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.