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Finding the Fourth Proportional to 148,737.71, 205,257.18 and 80,754.09

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Solution

The fourth proportional to 148,737.71, 205,257.18 and 80,754.09 is: 111,440.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,737.71 : 205,257.18 = 80,754.09 : x
  2. Step 2: Convert to fraction form
    148,737.71/205,257.18 = 80,754.09/x
  3. Step 3: Cross multiply
    148,737.71x = 205,257.18 × 80,754.09
  4. Step 4: Simplify right side
    148,737.71x = 16,575,356,786.87
  5. Step 5: Solve for x
    x = 16,575,356,786.87/148,737.71
  6. Step 6: Final answer
    x = 111,440.18

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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.