Home / 198,480.78-297,720.56-80,150.72

Finding the Fourth Proportional to 198,480.78, 297,720.56 and 80,150.72

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Solution

The fourth proportional to 198,480.78, 297,720.56 and 80,150.72 is: 120,225.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,480.78 : 297,720.56 = 80,150.72 : x
  2. Step 2: Convert to fraction form
    198,480.78/297,720.56 = 80,150.72/x
  3. Step 3: Cross multiply
    198,480.78x = 297,720.56 × 80,150.72
  4. Step 4: Simplify right side
    198,480.78x = 23,862,515,954.58
  5. Step 5: Solve for x
    x = 23,862,515,954.58/198,480.78
  6. Step 6: Final answer
    x = 120,225.83

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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.