Home / 198,999.30-298,061.55-80,609.70

Finding the Fourth Proportional to 198,999.30, 298,061.55 and 80,609.70

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Solution

The fourth proportional to 198,999.30, 298,061.55 and 80,609.70 is: 120,737.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,999.30 : 298,061.55 = 80,609.70 : x
  2. Step 2: Convert to fraction form
    198,999.30/298,061.55 = 80,609.70/x
  3. Step 3: Cross multiply
    198,999.30x = 298,061.55 × 80,609.70
  4. Step 4: Simplify right side
    198,999.30x = 24,026,652,127.04
  5. Step 5: Solve for x
    x = 24,026,652,127.04/198,999.30
  6. Step 6: Final answer
    x = 120,737.37

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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.