Home / 126,137.52-189,103.68-47,207.52

Finding the Fourth Proportional to 126,137.52, 189,103.68 and 47,207.52

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Solution

The fourth proportional to 126,137.52, 189,103.68 and 47,207.52 is: 70,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,137.52 : 189,103.68 = 47,207.52 : x
  2. Step 2: Convert to fraction form
    126,137.52/189,103.68 = 47,207.52/x
  3. Step 3: Cross multiply
    126,137.52x = 189,103.68 × 47,207.52
  4. Step 4: Simplify right side
    126,137.52x = 8,927,115,755.67
  5. Step 5: Solve for x
    x = 8,927,115,755.67/126,137.52
  6. Step 6: Final answer
    x = 70,772.88

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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.