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Finding the Fourth Proportional to 127,992.20, 191,729.10 and 88,593.80

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Solution

The fourth proportional to 127,992.20, 191,729.10 and 88,593.80 is: 132,711.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,992.20 : 191,729.10 = 88,593.80 : x
  2. Step 2: Convert to fraction form
    127,992.20/191,729.10 = 88,593.80/x
  3. Step 3: Cross multiply
    127,992.20x = 191,729.10 × 88,593.80
  4. Step 4: Simplify right side
    127,992.20x = 16,986,009,539.58
  5. Step 5: Solve for x
    x = 16,986,009,539.58/127,992.20
  6. Step 6: Final answer
    x = 132,711.29

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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.