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Finding the Fourth Proportional to 137,559.39, 206,398.44 and 74,423.97

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Solution

The fourth proportional to 137,559.39, 206,398.44 and 74,423.97 is: 111,668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,559.39 : 206,398.44 = 74,423.97 : x
  2. Step 2: Convert to fraction form
    137,559.39/206,398.44 = 74,423.97/x
  3. Step 3: Cross multiply
    137,559.39x = 206,398.44 × 74,423.97
  4. Step 4: Simplify right side
    137,559.39x = 15,360,991,306.61
  5. Step 5: Solve for x
    x = 15,360,991,306.61/137,559.39
  6. Step 6: Final answer
    x = 111,668.07

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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.