Home / 126,149.42-189,224.12-86,586.59

Finding the Fourth Proportional to 126,149.42, 189,224.12 and 86,586.59

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Solution

The fourth proportional to 126,149.42, 189,224.12 and 86,586.59 is: 129,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,149.42 : 189,224.12 = 86,586.59 : x
  2. Step 2: Convert to fraction form
    126,149.42/189,224.12 = 86,586.59/x
  3. Step 3: Cross multiply
    126,149.42x = 189,224.12 × 86,586.59
  4. Step 4: Simplify right side
    126,149.42x = 16,384,270,863.62
  5. Step 5: Solve for x
    x = 16,384,270,863.62/126,149.42
  6. Step 6: Final answer
    x = 129,879.87

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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.