Home / 126,310.28-189,410.30-67,131.72

Finding the Fourth Proportional to 126,310.28, 189,410.30 and 67,131.72

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Solution

The fourth proportional to 126,310.28, 189,410.30 and 67,131.72 is: 100,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,310.28 : 189,410.30 = 67,131.72 : x
  2. Step 2: Convert to fraction form
    126,310.28/189,410.30 = 67,131.72/x
  3. Step 3: Cross multiply
    126,310.28x = 189,410.30 × 67,131.72
  4. Step 4: Simplify right side
    126,310.28x = 12,715,439,224.72
  5. Step 5: Solve for x
    x = 12,715,439,224.72/126,310.28
  6. Step 6: Final answer
    x = 100,668.28

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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.