Home / 126,007.92-189,091.02-51,128.40

Finding the Fourth Proportional to 126,007.92, 189,091.02 and 51,128.40

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Solution

The fourth proportional to 126,007.92, 189,091.02 and 51,128.40 is: 76,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,007.92 : 189,091.02 = 51,128.40 : x
  2. Step 2: Convert to fraction form
    126,007.92/189,091.02 = 51,128.40/x
  3. Step 3: Cross multiply
    126,007.92x = 189,091.02 × 51,128.40
  4. Step 4: Simplify right side
    126,007.92x = 9,667,921,306.97
  5. Step 5: Solve for x
    x = 9,667,921,306.97/126,007.92
  6. Step 6: Final answer
    x = 76,724.71

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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.