Home / 126,139.52-189,106.68-47,209.52

Finding the Fourth Proportional to 126,139.52, 189,106.68 and 47,209.52

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Solution

The fourth proportional to 126,139.52, 189,106.68 and 47,209.52 is: 70,775.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.52 : 189,106.68 = 47,209.52 : x
  2. Step 2: Convert to fraction form
    126,139.52/189,106.68 = 47,209.52/x
  3. Step 3: Cross multiply
    126,139.52x = 189,106.68 × 47,209.52
  4. Step 4: Simplify right side
    126,139.52x = 8,927,635,591.59
  5. Step 5: Solve for x
    x = 8,927,635,591.59/126,139.52
  6. Step 6: Final answer
    x = 70,775.88

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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.