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Finding the Fourth Proportional to 148,818.73, 205,371.71 and 80,836.84

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Solution

The fourth proportional to 148,818.73, 205,371.71 and 80,836.84 is: 111,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,818.73 : 205,371.71 = 80,836.84 : x
  2. Step 2: Convert to fraction form
    148,818.73/205,371.71 = 80,836.84/x
  3. Step 3: Cross multiply
    148,818.73x = 205,371.71 × 80,836.84
  4. Step 4: Simplify right side
    148,818.73x = 16,601,599,034.94
  5. Step 5: Solve for x
    x = 16,601,599,034.94/148,818.73
  6. Step 6: Final answer
    x = 111,555.85

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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.