Home / 126,143.52-189,112.68-47,213.52

Finding the Fourth Proportional to 126,143.52, 189,112.68 and 47,213.52

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Solution

The fourth proportional to 126,143.52, 189,112.68 and 47,213.52 is: 70,781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,143.52 : 189,112.68 = 47,213.52 : x
  2. Step 2: Convert to fraction form
    126,143.52/189,112.68 = 47,213.52/x
  3. Step 3: Cross multiply
    126,143.52x = 189,112.68 × 47,213.52
  4. Step 4: Simplify right side
    126,143.52x = 8,928,675,299.43
  5. Step 5: Solve for x
    x = 8,928,675,299.43/126,143.52
  6. Step 6: Final answer
    x = 70,781.88

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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.