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Finding the Fourth Proportional to 159,584.60, 239,319.30 and 80,672.60

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Solution

The fourth proportional to 159,584.60, 239,319.30 and 80,672.60 is: 120,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,584.60 : 239,319.30 = 80,672.60 : x
  2. Step 2: Convert to fraction form
    159,584.60/239,319.30 = 80,672.60/x
  3. Step 3: Cross multiply
    159,584.60x = 239,319.30 × 80,672.60
  4. Step 4: Simplify right side
    159,584.60x = 19,306,510,161.18
  5. Step 5: Solve for x
    x = 19,306,510,161.18/159,584.60
  6. Step 6: Final answer
    x = 120,979.78

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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.