Home / 128,519.60-192,786.96-49,634.24

Finding the Fourth Proportional to 128,519.60, 192,786.96 and 49,634.24

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Solution

The fourth proportional to 128,519.60, 192,786.96 and 49,634.24 is: 74,454.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,519.60 : 192,786.96 = 49,634.24 : x
  2. Step 2: Convert to fraction form
    128,519.60/192,786.96 = 49,634.24/x
  3. Step 3: Cross multiply
    128,519.60x = 192,786.96 × 49,634.24
  4. Step 4: Simplify right side
    128,519.60x = 9,568,834,241.51
  5. Step 5: Solve for x
    x = 9,568,834,241.51/128,519.60
  6. Step 6: Final answer
    x = 74,454.28

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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.