Home / 199,826.91-275,945.30-128,331.49

Finding the Fourth Proportional to 199,826.91, 275,945.30 and 128,331.49

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Solution

The fourth proportional to 199,826.91, 275,945.30 and 128,331.49 is: 177,215.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,826.91 : 275,945.30 = 128,331.49 : x
  2. Step 2: Convert to fraction form
    199,826.91/275,945.30 = 128,331.49/x
  3. Step 3: Cross multiply
    199,826.91x = 275,945.30 × 128,331.49
  4. Step 4: Simplify right side
    199,826.91x = 35,412,470,865.84
  5. Step 5: Solve for x
    x = 35,412,470,865.84/199,826.91
  6. Step 6: Final answer
    x = 177,215.73

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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.