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Finding the Fourth Proportional to 181,470.56, 272,028.45 and 81,655.88

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Solution

The fourth proportional to 181,470.56, 272,028.45 and 81,655.88 is: 122,404.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,470.56 : 272,028.45 = 81,655.88 : x
  2. Step 2: Convert to fraction form
    181,470.56/272,028.45 = 81,655.88/x
  3. Step 3: Cross multiply
    181,470.56x = 272,028.45 × 81,655.88
  4. Step 4: Simplify right side
    181,470.56x = 22,212,722,469.79
  5. Step 5: Solve for x
    x = 22,212,722,469.79/181,470.56
  6. Step 6: Final answer
    x = 122,404.00

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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.