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Finding the Fourth Proportional to 159,620.60, 239,430.90 and 88,761.80

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Solution

The fourth proportional to 159,620.60, 239,430.90 and 88,761.80 is: 133,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,620.60 : 239,430.90 = 88,761.80 : x
  2. Step 2: Convert to fraction form
    159,620.60/239,430.90 = 88,761.80/x
  3. Step 3: Cross multiply
    159,620.60x = 239,430.90 × 88,761.80
  4. Step 4: Simplify right side
    159,620.60x = 21,252,317,659.62
  5. Step 5: Solve for x
    x = 21,252,317,659.62/159,620.60
  6. Step 6: Final answer
    x = 133,142.70

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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.