Home / 128,229.38-176,951.75-73,789.95

Finding the Fourth Proportional to 128,229.38, 176,951.75 and 73,789.95

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Solution

The fourth proportional to 128,229.38, 176,951.75 and 73,789.95 is: 101,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,229.38 : 176,951.75 = 73,789.95 : x
  2. Step 2: Convert to fraction form
    128,229.38/176,951.75 = 73,789.95/x
  3. Step 3: Cross multiply
    128,229.38x = 176,951.75 × 73,789.95
  4. Step 4: Simplify right side
    128,229.38x = 13,057,260,415.96
  5. Step 5: Solve for x
    x = 13,057,260,415.96/128,229.38
  6. Step 6: Final answer
    x = 101,827.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.