Home / 198,321.80-297,600.90-71,971.92

Finding the Fourth Proportional to 198,321.80, 297,600.90 and 71,971.92

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Solution

The fourth proportional to 198,321.80, 297,600.90 and 71,971.92 is: 108,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,321.80 : 297,600.90 = 71,971.92 : x
  2. Step 2: Convert to fraction form
    198,321.80/297,600.90 = 71,971.92/x
  3. Step 3: Cross multiply
    198,321.80x = 297,600.90 × 71,971.92
  4. Step 4: Simplify right side
    198,321.80x = 21,418,908,166.73
  5. Step 5: Solve for x
    x = 21,418,908,166.73/198,321.80
  6. Step 6: Final answer
    x = 108,000.78

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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.