Home / 126,614.28-189,986.22-51,789.72

Finding the Fourth Proportional to 126,614.28, 189,986.22 and 51,789.72

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Solution

The fourth proportional to 126,614.28, 189,986.22 and 51,789.72 is: 77,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,614.28 : 189,986.22 = 51,789.72 : x
  2. Step 2: Convert to fraction form
    126,614.28/189,986.22 = 51,789.72/x
  3. Step 3: Cross multiply
    126,614.28x = 189,986.22 × 51,789.72
  4. Step 4: Simplify right side
    126,614.28x = 9,839,333,137.66
  5. Step 5: Solve for x
    x = 9,839,333,137.66/126,614.28
  6. Step 6: Final answer
    x = 77,711.09

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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.