Home / 126,149.18-189,223.77-86,586.35

Finding the Fourth Proportional to 126,149.18, 189,223.77 and 86,586.35

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Solution

The fourth proportional to 126,149.18, 189,223.77 and 86,586.35 is: 129,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,149.18 : 189,223.77 = 86,586.35 : x
  2. Step 2: Convert to fraction form
    126,149.18/189,223.77 = 86,586.35/x
  3. Step 3: Cross multiply
    126,149.18x = 189,223.77 × 86,586.35
  4. Step 4: Simplify right side
    126,149.18x = 16,384,194,631.42
  5. Step 5: Solve for x
    x = 16,384,194,631.42/126,149.18
  6. Step 6: Final answer
    x = 129,879.52

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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.