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Finding the Fourth Proportional to 148,876.74, 205,450.74 and 80,894.28

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Solution

The fourth proportional to 148,876.74, 205,450.74 and 80,894.28 is: 111,634.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,876.74 : 205,450.74 = 80,894.28 : x
  2. Step 2: Convert to fraction form
    148,876.74/205,450.74 = 80,894.28/x
  3. Step 3: Cross multiply
    148,876.74x = 205,450.74 × 80,894.28
  4. Step 4: Simplify right side
    148,876.74x = 16,619,789,687.77
  5. Step 5: Solve for x
    x = 16,619,789,687.77/148,876.74
  6. Step 6: Final answer
    x = 111,634.56

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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.