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Finding the Fourth Proportional to 159,780.60, 239,670.90 and 100,877.40

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Solution

The fourth proportional to 159,780.60, 239,670.90 and 100,877.40 is: 151,316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,780.60 : 239,670.90 = 100,877.40 : x
  2. Step 2: Convert to fraction form
    159,780.60/239,670.90 = 100,877.40/x
  3. Step 3: Cross multiply
    159,780.60x = 239,670.90 × 100,877.40
  4. Step 4: Simplify right side
    159,780.60x = 24,177,377,247.66
  5. Step 5: Solve for x
    x = 24,177,377,247.66/159,780.60
  6. Step 6: Final answer
    x = 151,316.10

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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.