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Finding the Fourth Proportional to 159,819.70, 239,620.20 and 75,620.20

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Solution

The fourth proportional to 159,819.70, 239,620.20 and 75,620.20 is: 113,378.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,819.70 : 239,620.20 = 75,620.20 : x
  2. Step 2: Convert to fraction form
    159,819.70/239,620.20 = 75,620.20/x
  3. Step 3: Cross multiply
    159,819.70x = 239,620.20 × 75,620.20
  4. Step 4: Simplify right side
    159,819.70x = 18,120,127,448.04
  5. Step 5: Solve for x
    x = 18,120,127,448.04/159,819.70
  6. Step 6: Final answer
    x = 113,378.56

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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.