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Finding the Fourth Proportional to 123,887.86, 170,924.60 and 69,432.09

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Solution

The fourth proportional to 123,887.86, 170,924.60 and 69,432.09 is: 95,793.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,887.86 : 170,924.60 = 69,432.09 : x
  2. Step 2: Convert to fraction form
    123,887.86/170,924.60 = 69,432.09/x
  3. Step 3: Cross multiply
    123,887.86x = 170,924.60 × 69,432.09
  4. Step 4: Simplify right side
    123,887.86x = 11,867,651,352.47
  5. Step 5: Solve for x
    x = 11,867,651,352.47/123,887.86
  6. Step 6: Final answer
    x = 95,793.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.