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Finding the Fourth Proportional to 159,626.80, 239,472.60 and 54,456.40

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Solution

The fourth proportional to 159,626.80, 239,472.60 and 54,456.40 is: 81,695.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,626.80 : 239,472.60 = 54,456.40 : x
  2. Step 2: Convert to fraction form
    159,626.80/239,472.60 = 54,456.40/x
  3. Step 3: Cross multiply
    159,626.80x = 239,472.60 × 54,456.40
  4. Step 4: Simplify right side
    159,626.80x = 13,040,815,694.64
  5. Step 5: Solve for x
    x = 13,040,815,694.64/159,626.80
  6. Step 6: Final answer
    x = 81,695.65

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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.