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Finding the Fourth Proportional to 148,859.04, 205,425.44 and 81,791.04

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Solution

The fourth proportional to 148,859.04, 205,425.44 and 81,791.04 is: 112,871.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,859.04 : 205,425.44 = 81,791.04 : x
  2. Step 2: Convert to fraction form
    148,859.04/205,425.44 = 81,791.04/x
  3. Step 3: Cross multiply
    148,859.04x = 205,425.44 × 81,791.04
  4. Step 4: Simplify right side
    148,859.04x = 16,801,960,380.06
  5. Step 5: Solve for x
    x = 16,801,960,380.06/148,859.04
  6. Step 6: Final answer
    x = 112,871.62

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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.