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Finding the Fourth Proportional to 198,259.85, 297,685.01 and 80,161.85

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Solution

The fourth proportional to 198,259.85, 297,685.01 and 80,161.85 is: 120,362.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,259.85 : 297,685.01 = 80,161.85 : x
  2. Step 2: Convert to fraction form
    198,259.85/297,685.01 = 80,161.85/x
  3. Step 3: Cross multiply
    198,259.85x = 297,685.01 × 80,161.85
  4. Step 4: Simplify right side
    198,259.85x = 23,862,982,063.49
  5. Step 5: Solve for x
    x = 23,862,982,063.49/198,259.85
  6. Step 6: Final answer
    x = 120,362.15

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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.