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Finding the Fourth Proportional to 181,354.80, 271,902.60 and 81,433.20

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Solution

The fourth proportional to 181,354.80, 271,902.60 and 81,433.20 is: 122,091.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,354.80 : 271,902.60 = 81,433.20 : x
  2. Step 2: Convert to fraction form
    181,354.80/271,902.60 = 81,433.20/x
  3. Step 3: Cross multiply
    181,354.80x = 271,902.60 × 81,433.20
  4. Step 4: Simplify right side
    181,354.80x = 22,141,898,806.32
  5. Step 5: Solve for x
    x = 22,141,898,806.32/181,354.80
  6. Step 6: Final answer
    x = 122,091.61

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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.