Home / 126,000.20-188,741.10-86,601.80

Finding the Fourth Proportional to 126,000.20, 188,741.10 and 86,601.80

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Solution

The fourth proportional to 126,000.20, 188,741.10 and 86,601.80 is: 129,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,000.20 : 188,741.10 = 86,601.80 : x
  2. Step 2: Convert to fraction form
    126,000.20/188,741.10 = 86,601.80/x
  3. Step 3: Cross multiply
    126,000.20x = 188,741.10 × 86,601.80
  4. Step 4: Simplify right side
    126,000.20x = 16,345,318,993.98
  5. Step 5: Solve for x
    x = 16,345,318,993.98/126,000.20
  6. Step 6: Final answer
    x = 129,724.55

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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.