Home / 112,839.70-155,711.60-61,843.42

Finding the Fourth Proportional to 112,839.70, 155,711.60 and 61,843.42

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Solution

The fourth proportional to 112,839.70, 155,711.60 and 61,843.42 is: 85,339.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,839.70 : 155,711.60 = 61,843.42 : x
  2. Step 2: Convert to fraction form
    112,839.70/155,711.60 = 61,843.42/x
  3. Step 3: Cross multiply
    112,839.70x = 155,711.60 × 61,843.42
  4. Step 4: Simplify right side
    112,839.70x = 9,629,737,877.67
  5. Step 5: Solve for x
    x = 9,629,737,877.67/112,839.70
  6. Step 6: Final answer
    x = 85,339.98

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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.