Home / 188,640.33-260,360.64-108,121.83

Finding the Fourth Proportional to 188,640.33, 260,360.64 and 108,121.83

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Solution

The fourth proportional to 188,640.33, 260,360.64 and 108,121.83 is: 149,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,640.33 : 260,360.64 = 108,121.83 : x
  2. Step 2: Convert to fraction form
    188,640.33/260,360.64 = 108,121.83/x
  3. Step 3: Cross multiply
    188,640.33x = 260,360.64 × 108,121.83
  4. Step 4: Simplify right side
    188,640.33x = 28,150,668,856.77
  5. Step 5: Solve for x
    x = 28,150,668,856.77/188,640.33
  6. Step 6: Final answer
    x = 149,229.32

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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.