Home / 213,960.78-320,766.21-80,765.19

Finding the Fourth Proportional to 213,960.78, 320,766.21 and 80,765.19

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Solution

The fourth proportional to 213,960.78, 320,766.21 and 80,765.19 is: 121,081.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,960.78 : 320,766.21 = 80,765.19 : x
  2. Step 2: Convert to fraction form
    213,960.78/320,766.21 = 80,765.19/x
  3. Step 3: Cross multiply
    213,960.78x = 320,766.21 × 80,765.19
  4. Step 4: Simplify right side
    213,960.78x = 25,906,743,896.23
  5. Step 5: Solve for x
    x = 25,906,743,896.23/213,960.78
  6. Step 6: Final answer
    x = 121,081.74

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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.