Finding the Fourth Proportional to 127.50, 175.88 and 85.99
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Solution
The fourth proportional to 127.50, 175.88 and 85.99 is: 118.61
Step by Step Solution
- Step 1: Write the proportion equation
127.50 : 175.88 = 85.99 : x - Step 2: Convert to fraction form
127.50/175.88 = 85.99/x - Step 3: Cross multiply
127.50x = 175.88 × 85.99 - Step 4: Simplify right side
127.50x = 15,123.04 - Step 5: Solve for x
x = 15,123.04/127.50 - Step 6: Final answer
x = 118.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.