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Finding the Fourth Proportional to 138,295.92, 207,426.60 and 59,410.80

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Solution

The fourth proportional to 138,295.92, 207,426.60 and 59,410.80 is: 89,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,295.92 : 207,426.60 = 59,410.80 : x
  2. Step 2: Convert to fraction form
    138,295.92/207,426.60 = 59,410.80/x
  3. Step 3: Cross multiply
    138,295.92x = 207,426.60 × 59,410.80
  4. Step 4: Simplify right side
    138,295.92x = 12,323,380,247.28
  5. Step 5: Solve for x
    x = 12,323,380,247.28/138,295.92
  6. Step 6: Final answer
    x = 89,108.78

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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.