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Finding the Fourth Proportional to 125,150.64, 187,835.31 and 72,487.68

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Solution

The fourth proportional to 125,150.64, 187,835.31 and 72,487.68 is: 108,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,150.64 : 187,835.31 = 72,487.68 : x
  2. Step 2: Convert to fraction form
    125,150.64/187,835.31 = 72,487.68/x
  3. Step 3: Cross multiply
    125,150.64x = 187,835.31 × 72,487.68
  4. Step 4: Simplify right side
    125,150.64x = 13,615,745,843.98
  5. Step 5: Solve for x
    x = 13,615,745,843.98/125,150.64
  6. Step 6: Final answer
    x = 108,794.86

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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.