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Finding the Fourth Proportional to 161,468.20, 242,115.90 and 67,868.20

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Solution

The fourth proportional to 161,468.20, 242,115.90 and 67,868.20 is: 101,765.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,468.20 : 242,115.90 = 67,868.20 : x
  2. Step 2: Convert to fraction form
    161,468.20/242,115.90 = 67,868.20/x
  3. Step 3: Cross multiply
    161,468.20x = 242,115.90 × 67,868.20
  4. Step 4: Simplify right side
    161,468.20x = 16,431,970,324.38
  5. Step 5: Solve for x
    x = 16,431,970,324.38/161,468.20
  6. Step 6: Final answer
    x = 101,765.98

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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.