Home / 129,581.80-178,761.75-75,833.56

Finding the Fourth Proportional to 129,581.80, 178,761.75 and 75,833.56

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Solution

The fourth proportional to 129,581.80, 178,761.75 and 75,833.56 is: 104,614.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,581.80 : 178,761.75 = 75,833.56 : x
  2. Step 2: Convert to fraction form
    129,581.80/178,761.75 = 75,833.56/x
  3. Step 3: Cross multiply
    129,581.80x = 178,761.75 × 75,833.56
  4. Step 4: Simplify right side
    129,581.80x = 13,556,139,894.33
  5. Step 5: Solve for x
    x = 13,556,139,894.33/129,581.80
  6. Step 6: Final answer
    x = 104,614.54

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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.