Home / 185,780.82-278,778.48-100,391.97

Finding the Fourth Proportional to 185,780.82, 278,778.48 and 100,391.97

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Solution

The fourth proportional to 185,780.82, 278,778.48 and 100,391.97 is: 150,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,780.82 : 278,778.48 = 100,391.97 : x
  2. Step 2: Convert to fraction form
    185,780.82/278,778.48 = 100,391.97/x
  3. Step 3: Cross multiply
    185,780.82x = 278,778.48 × 100,391.97
  4. Step 4: Simplify right side
    185,780.82x = 27,987,120,800.81
  5. Step 5: Solve for x
    x = 27,987,120,800.81/185,780.82
  6. Step 6: Final answer
    x = 150,645.91

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1.5x scale

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.