Home / 198,531.20-297,537.60-80,105.60

Finding the Fourth Proportional to 198,531.20, 297,537.60 and 80,105.60

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Solution

The fourth proportional to 198,531.20, 297,537.60 and 80,105.60 is: 120,053.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,531.20 : 297,537.60 = 80,105.60 : x
  2. Step 2: Convert to fraction form
    198,531.20/297,537.60 = 80,105.60/x
  3. Step 3: Cross multiply
    198,531.20x = 297,537.60 × 80,105.60
  4. Step 4: Simplify right side
    198,531.20x = 23,834,427,970.56
  5. Step 5: Solve for x
    x = 23,834,427,970.56/198,531.20
  6. Step 6: Final answer
    x = 120,053.82

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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.