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Finding the Fourth Proportional to 159,815.29, 239,700.30 and 65,086.78

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Solution

The fourth proportional to 159,815.29, 239,700.30 and 65,086.78 is: 97,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,815.29 : 239,700.30 = 65,086.78 : x
  2. Step 2: Convert to fraction form
    159,815.29/239,700.30 = 65,086.78/x
  3. Step 3: Cross multiply
    159,815.29x = 239,700.30 × 65,086.78
  4. Step 4: Simplify right side
    159,815.29x = 15,601,320,692.03
  5. Step 5: Solve for x
    x = 15,601,320,692.03/159,815.29
  6. Step 6: Final answer
    x = 97,620.95

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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.