Home / 141,540.44-195,321.78-77,878.28

Finding the Fourth Proportional to 141,540.44, 195,321.78 and 77,878.28

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Solution

The fourth proportional to 141,540.44, 195,321.78 and 77,878.28 is: 107,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,540.44 : 195,321.78 = 77,878.28 : x
  2. Step 2: Convert to fraction form
    141,540.44/195,321.78 = 77,878.28/x
  3. Step 3: Cross multiply
    141,540.44x = 195,321.78 × 77,878.28
  4. Step 4: Simplify right side
    141,540.44x = 15,211,324,272.94
  5. Step 5: Solve for x
    x = 15,211,324,272.94/141,540.44
  6. Step 6: Final answer
    x = 107,469.81

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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.