Home / 128,519.73-192,787.15-49,634.37

Finding the Fourth Proportional to 128,519.73, 192,787.15 and 49,634.37

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Solution

The fourth proportional to 128,519.73, 192,787.15 and 49,634.37 is: 74,454.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519.73 : 192,787.15 = 49,634.37 : x
  2. Step 2: Convert to fraction form
    128,519.73/192,787.15 = 49,634.37/x
  3. Step 3: Cross multiply
    128,519.73x = 192,787.15 × 49,634.37
  4. Step 4: Simplify right side
    128,519.73x = 9,568,868,734.35
  5. Step 5: Solve for x
    x = 9,568,868,734.35/128,519.73
  6. Step 6: Final answer
    x = 74,454.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.