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Finding the Fourth Proportional to 181,612.40, 272,327.76 and 67,721.64

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Solution

The fourth proportional to 181,612.40, 272,327.76 and 67,721.64 is: 101,548.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,612.40 : 272,327.76 = 67,721.64 : x
  2. Step 2: Convert to fraction form
    181,612.40/272,327.76 = 67,721.64/x
  3. Step 3: Cross multiply
    181,612.40x = 272,327.76 × 67,721.64
  4. Step 4: Simplify right side
    181,612.40x = 18,442,482,524.73
  5. Step 5: Solve for x
    x = 18,442,482,524.73/181,612.40
  6. Step 6: Final answer
    x = 101,548.59

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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.