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Finding the Fourth Proportional to 161,937.20, 242,819.40 and 68,337.20

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Solution

The fourth proportional to 161,937.20, 242,819.40 and 68,337.20 is: 102,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,937.20 : 242,819.40 = 68,337.20 : x
  2. Step 2: Convert to fraction form
    161,937.20/242,819.40 = 68,337.20/x
  3. Step 3: Cross multiply
    161,937.20x = 242,819.40 × 68,337.20
  4. Step 4: Simplify right side
    161,937.20x = 16,593,597,901.68
  5. Step 5: Solve for x
    x = 16,593,597,901.68/161,937.20
  6. Step 6: Final answer
    x = 102,469.34

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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.