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Finding the Fourth Proportional to 125,498.57, 187,777.31 and 74,711.82

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Solution

The fourth proportional to 125,498.57, 187,777.31 and 74,711.82 is: 111,787.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,498.57 : 187,777.31 = 74,711.82 : x
  2. Step 2: Convert to fraction form
    125,498.57/187,777.31 = 74,711.82/x
  3. Step 3: Cross multiply
    125,498.57x = 187,777.31 × 74,711.82
  4. Step 4: Simplify right side
    125,498.57x = 14,029,184,489.54
  5. Step 5: Solve for x
    x = 14,029,184,489.54/125,498.57
  6. Step 6: Final answer
    x = 111,787.61

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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.