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Finding the Fourth Proportional to 198,598.80, 297,788.85 and 80,136.30

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Solution

The fourth proportional to 198,598.80, 297,788.85 and 80,136.30 is: 120,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,598.80 : 297,788.85 = 80,136.30 : x
  2. Step 2: Convert to fraction form
    198,598.80/297,788.85 = 80,136.30/x
  3. Step 3: Cross multiply
    198,598.80x = 297,788.85 × 80,136.30
  4. Step 4: Simplify right side
    198,598.80x = 23,863,696,620.26
  5. Step 5: Solve for x
    x = 23,863,696,620.26/198,598.80
  6. Step 6: Final answer
    x = 120,160.33

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1.5x scale

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.