Home / 198,659.20-297,729.60-80,233.60

Finding the Fourth Proportional to 198,659.20, 297,729.60 and 80,233.60

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Solution

The fourth proportional to 198,659.20, 297,729.60 and 80,233.60 is: 120,245.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,659.20 : 297,729.60 = 80,233.60 : x
  2. Step 2: Convert to fraction form
    198,659.20/297,729.60 = 80,233.60/x
  3. Step 3: Cross multiply
    198,659.20x = 297,729.60 × 80,233.60
  4. Step 4: Simplify right side
    198,659.20x = 23,887,917,634.56
  5. Step 5: Solve for x
    x = 23,887,917,634.56/198,659.20
  6. Step 6: Final answer
    x = 120,245.72

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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.