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Finding the Fourth Proportional to 137,694.48, 206,104.30 and 74,424.56

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Solution

The fourth proportional to 137,694.48, 206,104.30 and 74,424.56 is: 111,400.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,694.48 : 206,104.30 = 74,424.56 : x
  2. Step 2: Convert to fraction form
    137,694.48/206,104.30 = 74,424.56/x
  3. Step 3: Cross multiply
    137,694.48x = 206,104.30 × 74,424.56
  4. Step 4: Simplify right side
    137,694.48x = 15,339,221,841.61
  5. Step 5: Solve for x
    x = 15,339,221,841.61/137,694.48
  6. Step 6: Final answer
    x = 111,400.41

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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.