Home / 126,078.20-189,146.86-50,181.33

Finding the Fourth Proportional to 126,078.20, 189,146.86 and 50,181.33

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Solution

The fourth proportional to 126,078.20, 189,146.86 and 50,181.33 is: 75,283.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,078.20 : 189,146.86 = 50,181.33 : x
  2. Step 2: Convert to fraction form
    126,078.20/189,146.86 = 50,181.33/x
  3. Step 3: Cross multiply
    126,078.20x = 189,146.86 × 50,181.33
  4. Step 4: Simplify right side
    126,078.20x = 9,491,641,188.30
  5. Step 5: Solve for x
    x = 9,491,641,188.30/126,078.20
  6. Step 6: Final answer
    x = 75,283.76

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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.