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Finding the Fourth Proportional to 148,293.78, 204,645.48 and 81,225.78

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Solution

The fourth proportional to 148,293.78, 204,645.48 and 81,225.78 is: 112,091.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,293.78 : 204,645.48 = 81,225.78 : x
  2. Step 2: Convert to fraction form
    148,293.78/204,645.48 = 81,225.78/x
  3. Step 3: Cross multiply
    148,293.78x = 204,645.48 × 81,225.78
  4. Step 4: Simplify right side
    148,293.78x = 16,622,488,736.47
  5. Step 5: Solve for x
    x = 16,622,488,736.47/148,293.78
  6. Step 6: Final answer
    x = 112,091.61

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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.