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Finding the Fourth Proportional to 94.92, 131.14 and 90.92

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Solution

The fourth proportional to 94.92, 131.14 and 90.92 is: 125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.92 : 131.14 = 90.92 : x
  2. Step 2: Convert to fraction form
    94.92/131.14 = 90.92/x
  3. Step 3: Cross multiply
    94.92x = 131.14 × 90.92
  4. Step 4: Simplify right side
    94.92x = 11,923.25
  5. Step 5: Solve for x
    x = 11,923.25/94.92
  6. Step 6: Final answer
    x = 125.61

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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.