Home / 128,707.20-193,190.40-62,200.80

Finding the Fourth Proportional to 128,707.20, 193,190.40 and 62,200.80

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Solution

The fourth proportional to 128,707.20, 193,190.40 and 62,200.80 is: 93,363.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,707.20 : 193,190.40 = 62,200.80 : x
  2. Step 2: Convert to fraction form
    128,707.20/193,190.40 = 62,200.80/x
  3. Step 3: Cross multiply
    128,707.20x = 193,190.40 × 62,200.80
  4. Step 4: Simplify right side
    128,707.20x = 12,016,597,432.32
  5. Step 5: Solve for x
    x = 12,016,597,432.32/128,707.20
  6. Step 6: Final answer
    x = 93,363.83

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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.