Home / 126,418.80-173,921.40-122,919.60

Finding the Fourth Proportional to 126,418.80, 173,921.40 and 122,919.60

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Solution

The fourth proportional to 126,418.80, 173,921.40 and 122,919.60 is: 169,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,418.80 : 173,921.40 = 122,919.60 : x
  2. Step 2: Convert to fraction form
    126,418.80/173,921.40 = 122,919.60/x
  3. Step 3: Cross multiply
    126,418.80x = 173,921.40 × 122,919.60
  4. Step 4: Simplify right side
    126,418.80x = 21,378,348,919.44
  5. Step 5: Solve for x
    x = 21,378,348,919.44/126,418.80
  6. Step 6: Final answer
    x = 169,107.36

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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.