Home / 106,480.20-146,789.92-83,780.04

Finding the Fourth Proportional to 106,480.20, 146,789.92 and 83,780.04

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Solution

The fourth proportional to 106,480.20, 146,789.92 and 83,780.04 is: 115,496.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,480.20 : 146,789.92 = 83,780.04 : x
  2. Step 2: Convert to fraction form
    106,480.20/146,789.92 = 83,780.04/x
  3. Step 3: Cross multiply
    106,480.20x = 146,789.92 × 83,780.04
  4. Step 4: Simplify right side
    106,480.20x = 12,298,065,369.20
  5. Step 5: Solve for x
    x = 12,298,065,369.20/106,480.20
  6. Step 6: Final answer
    x = 115,496.26

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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.