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Finding the Fourth Proportional to 112,205.88, 154,843.25 and 61,217.87

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Solution

The fourth proportional to 112,205.88, 154,843.25 and 61,217.87 is: 84,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,205.88 : 154,843.25 = 61,217.87 : x
  2. Step 2: Convert to fraction form
    112,205.88/154,843.25 = 61,217.87/x
  3. Step 3: Cross multiply
    112,205.88x = 154,843.25 × 61,217.87
  4. Step 4: Simplify right side
    112,205.88x = 9,479,172,868.57
  5. Step 5: Solve for x
    x = 9,479,172,868.57/112,205.88
  6. Step 6: Final answer
    x = 84,480.18

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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.