Home / 126,071.20-188,847.60-86,672.80

Finding the Fourth Proportional to 126,071.20, 188,847.60 and 86,672.80

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Solution

The fourth proportional to 126,071.20, 188,847.60 and 86,672.80 is: 129,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,071.20 : 188,847.60 = 86,672.80 : x
  2. Step 2: Convert to fraction form
    126,071.20/188,847.60 = 86,672.80/x
  3. Step 3: Cross multiply
    126,071.20x = 188,847.60 × 86,672.80
  4. Step 4: Simplify right side
    126,071.20x = 16,367,950,265.28
  5. Step 5: Solve for x
    x = 16,367,950,265.28/126,071.20
  6. Step 6: Final answer
    x = 129,831.00

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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.