Home / 136,717.20-205,104.60-57,790.80

Finding the Fourth Proportional to 136,717.20, 205,104.60 and 57,790.80

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Solution

The fourth proportional to 136,717.20, 205,104.60 and 57,790.80 is: 86,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,717.20 : 205,104.60 = 57,790.80 : x
  2. Step 2: Convert to fraction form
    136,717.20/205,104.60 = 57,790.80/x
  3. Step 3: Cross multiply
    136,717.20x = 205,104.60 × 57,790.80
  4. Step 4: Simplify right side
    136,717.20x = 11,853,158,917.68
  5. Step 5: Solve for x
    x = 11,853,158,917.68/136,717.20
  6. Step 6: Final answer
    x = 86,698.37

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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.