Home / 128,917.14-177,902.22-71,556.29

Finding the Fourth Proportional to 128,917.14, 177,902.22 and 71,556.29

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Solution

The fourth proportional to 128,917.14, 177,902.22 and 71,556.29 is: 98,745.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,917.14 : 177,902.22 = 71,556.29 : x
  2. Step 2: Convert to fraction form
    128,917.14/177,902.22 = 71,556.29/x
  3. Step 3: Cross multiply
    128,917.14x = 177,902.22 × 71,556.29
  4. Step 4: Simplify right side
    128,917.14x = 12,730,022,891.92
  5. Step 5: Solve for x
    x = 12,730,022,891.92/128,917.14
  6. Step 6: Final answer
    x = 98,745.78

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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.