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Finding the Fourth Proportional to 203,540.67, 280,879.49 and 122,954.17

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Solution

The fourth proportional to 203,540.67, 280,879.49 and 122,954.17 is: 169,672.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,540.67 : 280,879.49 = 122,954.17 : x
  2. Step 2: Convert to fraction form
    203,540.67/280,879.49 = 122,954.17/x
  3. Step 3: Cross multiply
    203,540.67x = 280,879.49 × 122,954.17
  4. Step 4: Simplify right side
    203,540.67x = 34,535,302,645.33
  5. Step 5: Solve for x
    x = 34,535,302,645.33/203,540.67
  6. Step 6: Final answer
    x = 169,672.74

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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.