Home / 140,297.20-193,614.60-76,640.88

Finding the Fourth Proportional to 140,297.20, 193,614.60 and 76,640.88

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Solution

The fourth proportional to 140,297.20, 193,614.60 and 76,640.88 is: 105,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,297.20 : 193,614.60 = 76,640.88 : x
  2. Step 2: Convert to fraction form
    140,297.20/193,614.60 = 76,640.88/x
  3. Step 3: Cross multiply
    140,297.20x = 193,614.60 × 76,640.88
  4. Step 4: Simplify right side
    140,297.20x = 14,838,793,324.85
  5. Step 5: Solve for x
    x = 14,838,793,324.85/140,297.20
  6. Step 6: Final answer
    x = 105,766.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.