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Finding the Fourth Proportional to 138,142.60, 207,161.82 and 44,623.24

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Solution

The fourth proportional to 138,142.60, 207,161.82 and 44,623.24 is: 66,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,142.60 : 207,161.82 = 44,623.24 : x
  2. Step 2: Convert to fraction form
    138,142.60/207,161.82 = 44,623.24/x
  3. Step 3: Cross multiply
    138,142.60x = 207,161.82 × 44,623.24
  4. Step 4: Simplify right side
    138,142.60x = 9,244,231,612.70
  5. Step 5: Solve for x
    x = 9,244,231,612.70/138,142.60
  6. Step 6: Final answer
    x = 66,918.04

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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.