Home / 126,615.97-189,853.83-51,788.66

Finding the Fourth Proportional to 126,615.97, 189,853.83 and 51,788.66

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Solution

The fourth proportional to 126,615.97, 189,853.83 and 51,788.66 is: 77,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,615.97 : 189,853.83 = 51,788.66 : x
  2. Step 2: Convert to fraction form
    126,615.97/189,853.83 = 51,788.66/x
  3. Step 3: Cross multiply
    126,615.97x = 189,853.83 × 51,788.66
  4. Step 4: Simplify right side
    126,615.97x = 9,832,275,451.57
  5. Step 5: Solve for x
    x = 9,832,275,451.57/126,615.97
  6. Step 6: Final answer
    x = 77,654.31

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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.