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Finding the Fourth Proportional to 125,059.80, 172,578.78 and 68,469.24

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Solution

The fourth proportional to 125,059.80, 172,578.78 and 68,469.24 is: 94,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,059.80 : 172,578.78 = 68,469.24 : x
  2. Step 2: Convert to fraction form
    125,059.80/172,578.78 = 68,469.24/x
  3. Step 3: Cross multiply
    125,059.80x = 172,578.78 × 68,469.24
  4. Step 4: Simplify right side
    125,059.80x = 11,816,337,906.73
  5. Step 5: Solve for x
    x = 11,816,337,906.73/125,059.80
  6. Step 6: Final answer
    x = 94,485.50

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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.