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Finding the Fourth Proportional to 159,834.88, 239,561.65 and 74,330.31

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Solution

The fourth proportional to 159,834.88, 239,561.65 and 74,330.31 is: 111,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,834.88 : 239,561.65 = 74,330.31 : x
  2. Step 2: Convert to fraction form
    159,834.88/239,561.65 = 74,330.31/x
  3. Step 3: Cross multiply
    159,834.88x = 239,561.65 × 74,330.31
  4. Step 4: Simplify right side
    159,834.88x = 17,806,691,708.61
  5. Step 5: Solve for x
    x = 17,806,691,708.61/159,834.88
  6. Step 6: Final answer
    x = 111,406.79

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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.