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Finding the Fourth Proportional to 115,232.80, 159,027.42 and 67,489.78

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Solution

The fourth proportional to 115,232.80, 159,027.42 and 67,489.78 is: 93,139.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,232.80 : 159,027.42 = 67,489.78 : x
  2. Step 2: Convert to fraction form
    115,232.80/159,027.42 = 67,489.78/x
  3. Step 3: Cross multiply
    115,232.80x = 159,027.42 × 67,489.78
  4. Step 4: Simplify right side
    115,232.80x = 10,732,725,589.77
  5. Step 5: Solve for x
    x = 10,732,725,589.77/115,232.80
  6. Step 6: Final answer
    x = 93,139.50

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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.