Home / 126,067.20-188,841.60-86,668.80

Finding the Fourth Proportional to 126,067.20, 188,841.60 and 86,668.80

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Solution

The fourth proportional to 126,067.20, 188,841.60 and 86,668.80 is: 129,825.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,067.20 : 188,841.60 = 86,668.80 : x
  2. Step 2: Convert to fraction form
    126,067.20/188,841.60 = 86,668.80/x
  3. Step 3: Cross multiply
    126,067.20x = 188,841.60 × 86,668.80
  4. Step 4: Simplify right side
    126,067.20x = 16,366,674,862.08
  5. Step 5: Solve for x
    x = 16,366,674,862.08/126,067.20
  6. Step 6: Final answer
    x = 129,825.00

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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.