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Finding the Fourth Proportional to 159,885.60, 239,914.80 and 71,152.80

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Solution

The fourth proportional to 159,885.60, 239,914.80 and 71,152.80 is: 106,767.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,885.60 : 239,914.80 = 71,152.80 : x
  2. Step 2: Convert to fraction form
    159,885.60/239,914.80 = 71,152.80/x
  3. Step 3: Cross multiply
    159,885.60x = 239,914.80 × 71,152.80
  4. Step 4: Simplify right side
    159,885.60x = 17,070,609,781.44
  5. Step 5: Solve for x
    x = 17,070,609,781.44/159,885.60
  6. Step 6: Final answer
    x = 106,767.65

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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.