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Finding the Fourth Proportional to 148,959.88, 205,565.60 and 80,977.44

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Solution

The fourth proportional to 148,959.88, 205,565.60 and 80,977.44 is: 111,749.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,959.88 : 205,565.60 = 80,977.44 : x
  2. Step 2: Convert to fraction form
    148,959.88/205,565.60 = 80,977.44/x
  3. Step 3: Cross multiply
    148,959.88x = 205,565.60 × 80,977.44
  4. Step 4: Simplify right side
    148,959.88x = 16,646,175,401.57
  5. Step 5: Solve for x
    x = 16,646,175,401.57/148,959.88
  6. Step 6: Final answer
    x = 111,749.39

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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.