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Finding the Fourth Proportional to 168,354.86, 232,331.05 and 91,874.55

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Solution

The fourth proportional to 168,354.86, 232,331.05 and 91,874.55 is: 126,787.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,354.86 : 232,331.05 = 91,874.55 : x
  2. Step 2: Convert to fraction form
    168,354.86/232,331.05 = 91,874.55/x
  3. Step 3: Cross multiply
    168,354.86x = 232,331.05 × 91,874.55
  4. Step 4: Simplify right side
    168,354.86x = 21,345,311,655.86
  5. Step 5: Solve for x
    x = 21,345,311,655.86/168,354.86
  6. Step 6: Final answer
    x = 126,787.62

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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.