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Finding the Fourth Proportional to 148,894.38, 205,475.61 and 80,911.38

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Solution

The fourth proportional to 148,894.38, 205,475.61 and 80,911.38 is: 111,658.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,894.38 : 205,475.61 = 80,911.38 : x
  2. Step 2: Convert to fraction form
    148,894.38/205,475.61 = 80,911.38/x
  3. Step 3: Cross multiply
    148,894.38x = 205,475.61 × 80,911.38
  4. Step 4: Simplify right side
    148,894.38x = 16,625,315,161.44
  5. Step 5: Solve for x
    x = 16,625,315,161.44/148,894.38
  6. Step 6: Final answer
    x = 111,658.45

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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.