Home / 121,745.20-182,493.60-82,306.30

Finding the Fourth Proportional to 121,745.20, 182,493.60 and 82,306.30

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Solution

The fourth proportional to 121,745.20, 182,493.60 and 82,306.30 is: 123,375.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,745.20 : 182,493.60 = 82,306.30 : x
  2. Step 2: Convert to fraction form
    121,745.20/182,493.60 = 82,306.30/x
  3. Step 3: Cross multiply
    121,745.20x = 182,493.60 × 82,306.30
  4. Step 4: Simplify right side
    121,745.20x = 15,020,372,989.68
  5. Step 5: Solve for x
    x = 15,020,372,989.68/121,745.20
  6. Step 6: Final answer
    x = 123,375.48

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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.