Home / 198,612.40-297,724.20-80,125.60

Finding the Fourth Proportional to 198,612.40, 297,724.20 and 80,125.60

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Solution

The fourth proportional to 198,612.40, 297,724.20 and 80,125.60 is: 120,109.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,612.40 : 297,724.20 = 80,125.60 : x
  2. Step 2: Convert to fraction form
    198,612.40/297,724.20 = 80,125.60/x
  3. Step 3: Cross multiply
    198,612.40x = 297,724.20 × 80,125.60
  4. Step 4: Simplify right side
    198,612.40x = 23,855,330,159.52
  5. Step 5: Solve for x
    x = 23,855,330,159.52/198,612.40
  6. Step 6: Final answer
    x = 120,109.97

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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.