Home / 198,543.72-297,825.30-80,200.20

Finding the Fourth Proportional to 198,543.72, 297,825.30 and 80,200.20

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Solution

The fourth proportional to 198,543.72, 297,825.30 and 80,200.20 is: 120,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,543.72 : 297,825.30 = 80,200.20 : x
  2. Step 2: Convert to fraction form
    198,543.72/297,825.30 = 80,200.20/x
  3. Step 3: Cross multiply
    198,543.72x = 297,825.30 × 80,200.20
  4. Step 4: Simplify right side
    198,543.72x = 23,885,648,625.06
  5. Step 5: Solve for x
    x = 23,885,648,625.06/198,543.72
  6. Step 6: Final answer
    x = 120,304.23

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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.