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Finding the Fourth Proportional to 168,387.60, 232,404.99 and 100,408.95

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Solution

The fourth proportional to 168,387.60, 232,404.99 and 100,408.95 is: 138,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,387.60 : 232,404.99 = 100,408.95 : x
  2. Step 2: Convert to fraction form
    168,387.60/232,404.99 = 100,408.95/x
  3. Step 3: Cross multiply
    168,387.60x = 232,404.99 × 100,408.95
  4. Step 4: Simplify right side
    168,387.60x = 23,335,541,020.66
  5. Step 5: Solve for x
    x = 23,335,541,020.66/168,387.60
  6. Step 6: Final answer
    x = 138,582.30

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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.