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Finding the Fourth Proportional to 94.14, 129.65 and 92.13

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Solution

The fourth proportional to 94.14, 129.65 and 92.13 is: 126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.14 : 129.65 = 92.13 : x
  2. Step 2: Convert to fraction form
    94.14/129.65 = 92.13/x
  3. Step 3: Cross multiply
    94.14x = 129.65 × 92.13
  4. Step 4: Simplify right side
    94.14x = 11,944.65
  5. Step 5: Solve for x
    x = 11,944.65/94.14
  6. Step 6: Final answer
    x = 126.88

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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.