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Finding the Fourth Proportional to 138,594.60, 207,989.10 and 88,795.80

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Solution

The fourth proportional to 138,594.60, 207,989.10 and 88,795.80 is: 133,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,594.60 : 207,989.10 = 88,795.80 : x
  2. Step 2: Convert to fraction form
    138,594.60/207,989.10 = 88,795.80/x
  3. Step 3: Cross multiply
    138,594.60x = 207,989.10 × 88,795.80
  4. Step 4: Simplify right side
    138,594.60x = 18,468,558,525.78
  5. Step 5: Solve for x
    x = 18,468,558,525.78/138,594.60
  6. Step 6: Final answer
    x = 133,255.97

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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.