Home / 126,084.20-188,867.10-86,685.80

Finding the Fourth Proportional to 126,084.20, 188,867.10 and 86,685.80

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Solution

The fourth proportional to 126,084.20, 188,867.10 and 86,685.80 is: 129,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,084.20 : 188,867.10 = 86,685.80 : x
  2. Step 2: Convert to fraction form
    126,084.20/188,867.10 = 86,685.80/x
  3. Step 3: Cross multiply
    126,084.20x = 188,867.10 × 86,685.80
  4. Step 4: Simplify right side
    126,084.20x = 16,372,095,657.18
  5. Step 5: Solve for x
    x = 16,372,095,657.18/126,084.20
  6. Step 6: Final answer
    x = 129,850.49

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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.