Home / 126,246.71-189,622.28-78,945.95

Finding the Fourth Proportional to 126,246.71, 189,622.28 and 78,945.95

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Solution

The fourth proportional to 126,246.71, 189,622.28 and 78,945.95 is: 118,576.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,246.71 : 189,622.28 = 78,945.95 : x
  2. Step 2: Convert to fraction form
    126,246.71/189,622.28 = 78,945.95/x
  3. Step 3: Cross multiply
    126,246.71x = 189,622.28 × 78,945.95
  4. Step 4: Simplify right side
    126,246.71x = 14,969,910,641.04
  5. Step 5: Solve for x
    x = 14,969,910,641.04/126,246.71
  6. Step 6: Final answer
    x = 118,576.64

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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.