Finding the Fourth Proportional to 127.13, 175.27 and 100.99
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Solution
The fourth proportional to 127.13, 175.27 and 100.99 is: 139.23
Step by Step Solution
- Step 1: Write the proportion equation
127.13 : 175.27 = 100.99 : x - Step 2: Convert to fraction form
127.13/175.27 = 100.99/x - Step 3: Cross multiply
127.13x = 175.27 × 100.99 - Step 4: Simplify right side
127.13x = 17,700.62 - Step 5: Solve for x
x = 17,700.62/127.13 - Step 6: Final answer
x = 139.23
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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.