Home / 205,516.92-308,340.18-72,391.80

Finding the Fourth Proportional to 205,516.92, 308,340.18 and 72,391.80

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Solution

The fourth proportional to 205,516.92, 308,340.18 and 72,391.80 is: 108,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,516.92 : 308,340.18 = 72,391.80 : x
  2. Step 2: Convert to fraction form
    205,516.92/308,340.18 = 72,391.80/x
  3. Step 3: Cross multiply
    205,516.92x = 308,340.18 × 72,391.80
  4. Step 4: Simplify right side
    205,516.92x = 22,321,300,642.52
  5. Step 5: Solve for x
    x = 22,321,300,642.52/205,516.92
  6. Step 6: Final answer
    x = 108,610.53

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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.