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Finding the Fourth Proportional to 125,123.76, 187,640.28 and 36,353.52

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Solution

The fourth proportional to 125,123.76, 187,640.28 and 36,353.52 is: 54,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,123.76 : 187,640.28 = 36,353.52 : x
  2. Step 2: Convert to fraction form
    125,123.76/187,640.28 = 36,353.52/x
  3. Step 3: Cross multiply
    125,123.76x = 187,640.28 × 36,353.52
  4. Step 4: Simplify right side
    125,123.76x = 6,821,384,671.79
  5. Step 5: Solve for x
    x = 6,821,384,671.79/125,123.76
  6. Step 6: Final answer
    x = 54,517.10

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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.