Home / 126,149.20-189,223.80-86,586.37

Finding the Fourth Proportional to 126,149.20, 189,223.80 and 86,586.37

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Solution

The fourth proportional to 126,149.20, 189,223.80 and 86,586.37 is: 129,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,149.20 : 189,223.80 = 86,586.37 : x
  2. Step 2: Convert to fraction form
    126,149.20/189,223.80 = 86,586.37/x
  3. Step 3: Cross multiply
    126,149.20x = 189,223.80 × 86,586.37
  4. Step 4: Simplify right side
    126,149.20x = 16,384,201,959.61
  5. Step 5: Solve for x
    x = 16,384,201,959.61/126,149.20
  6. Step 6: Final answer
    x = 129,879.56

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1.5x scale

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.