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Finding the Fourth Proportional to 111,415.62, 167,229.56 and 69,167.86

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Solution

The fourth proportional to 111,415.62, 167,229.56 and 69,167.86 is: 103,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,415.62 : 167,229.56 = 69,167.86 : x
  2. Step 2: Convert to fraction form
    111,415.62/167,229.56 = 69,167.86/x
  3. Step 3: Cross multiply
    111,415.62x = 167,229.56 × 69,167.86
  4. Step 4: Simplify right side
    111,415.62x = 11,566,910,793.94
  5. Step 5: Solve for x
    x = 11,566,910,793.94/111,415.62
  6. Step 6: Final answer
    x = 103,817.68

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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.