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Finding the Fourth Proportional to 137,149.60, 205,724.40 and 43,664.80

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Solution

The fourth proportional to 137,149.60, 205,724.40 and 43,664.80 is: 65,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,149.60 : 205,724.40 = 43,664.80 : x
  2. Step 2: Convert to fraction form
    137,149.60/205,724.40 = 43,664.80/x
  3. Step 3: Cross multiply
    137,149.60x = 205,724.40 × 43,664.80
  4. Step 4: Simplify right side
    137,149.60x = 8,982,914,781.12
  5. Step 5: Solve for x
    x = 8,982,914,781.12/137,149.60
  6. Step 6: Final answer
    x = 65,497.20

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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.