Finding the Fourth Proportional to 84.16, 125.88 and 74.14
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Solution
The fourth proportional to 84.16, 125.88 and 74.14 is: 110.89
Step by Step Solution
- Step 1: Write the proportion equation
84.16 : 125.88 = 74.14 : x - Step 2: Convert to fraction form
84.16/125.88 = 74.14/x - Step 3: Cross multiply
84.16x = 125.88 × 74.14 - Step 4: Simplify right side
84.16x = 9,332.74 - Step 5: Solve for x
x = 9,332.74/84.16 - Step 6: Final answer
x = 110.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.