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Finding the Fourth Proportional to 181,551.40, 272,132.70 and 81,694.60

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Solution

The fourth proportional to 181,551.40, 272,132.70 and 81,694.60 is: 122,454.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,551.40 : 272,132.70 = 81,694.60 : x
  2. Step 2: Convert to fraction form
    181,551.40/272,132.70 = 81,694.60/x
  3. Step 3: Cross multiply
    181,551.40x = 272,132.70 × 81,694.60
  4. Step 4: Simplify right side
    181,551.40x = 22,231,772,073.42
  5. Step 5: Solve for x
    x = 22,231,772,073.42/181,551.40
  6. Step 6: Final answer
    x = 122,454.42

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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.