Home / 198,743.40-297,920.70-80,256.60

Finding the Fourth Proportional to 198,743.40, 297,920.70 and 80,256.60

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Solution

The fourth proportional to 198,743.40, 297,920.70 and 80,256.60 is: 120,306.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,743.40 : 297,920.70 = 80,256.60 : x
  2. Step 2: Convert to fraction form
    198,743.40/297,920.70 = 80,256.60/x
  3. Step 3: Cross multiply
    198,743.40x = 297,920.70 × 80,256.60
  4. Step 4: Simplify right side
    198,743.40x = 23,910,102,451.62
  5. Step 5: Solve for x
    x = 23,910,102,451.62/198,743.40
  6. Step 6: Final answer
    x = 120,306.40

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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.