Home / 126,139.41-189,203.63-31,367.61

Finding the Fourth Proportional to 126,139.41, 189,203.63 and 31,367.61

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Solution

The fourth proportional to 126,139.41, 189,203.63 and 31,367.61 is: 47,050.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,139.41 : 189,203.63 = 31,367.61 : x
  2. Step 2: Convert to fraction form
    126,139.41/189,203.63 = 31,367.61/x
  3. Step 3: Cross multiply
    126,139.41x = 189,203.63 × 31,367.61
  4. Step 4: Simplify right side
    126,139.41x = 5,934,865,519.59
  5. Step 5: Solve for x
    x = 5,934,865,519.59/126,139.41
  6. Step 6: Final answer
    x = 47,050.05

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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.