Home / 126,506.24-189,790.50-89,139.29

Finding the Fourth Proportional to 126,506.24, 189,790.50 and 89,139.29

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Solution

The fourth proportional to 126,506.24, 189,790.50 and 89,139.29 is: 133,730.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,506.24 : 189,790.50 = 89,139.29 : x
  2. Step 2: Convert to fraction form
    126,506.24/189,790.50 = 89,139.29/x
  3. Step 3: Cross multiply
    126,506.24x = 189,790.50 × 89,139.29
  4. Step 4: Simplify right side
    126,506.24x = 16,917,789,469.79
  5. Step 5: Solve for x
    x = 16,917,789,469.79/126,506.24
  6. Step 6: Final answer
    x = 133,730.87

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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.