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Finding the Fourth Proportional to 126,122.60, 189,087.90 and 63,837.80

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Solution

The fourth proportional to 126,122.60, 189,087.90 and 63,837.80 is: 95,708.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,122.60 : 189,087.90 = 63,837.80 : x
  2. Step 2: Convert to fraction form
    126,122.60/189,087.90 = 63,837.80/x
  3. Step 3: Cross multiply
    126,122.60x = 189,087.90 × 63,837.80
  4. Step 4: Simplify right side
    126,122.60x = 12,070,955,542.62
  5. Step 5: Solve for x
    x = 12,070,955,542.62/126,122.60
  6. Step 6: Final answer
    x = 95,708.11

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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.