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Finding the Fourth Proportional to 168,099.39, 252,149.49 and 138,398.31

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Solution

The fourth proportional to 168,099.39, 252,149.49 and 138,398.31 is: 207,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,099.39 : 252,149.49 = 138,398.31 : x
  2. Step 2: Convert to fraction form
    168,099.39/252,149.49 = 138,398.31/x
  3. Step 3: Cross multiply
    168,099.39x = 252,149.49 × 138,398.31
  4. Step 4: Simplify right side
    168,099.39x = 34,897,063,283.36
  5. Step 5: Solve for x
    x = 34,897,063,283.36/168,099.39
  6. Step 6: Final answer
    x = 207,597.80

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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.