Home / 141,909.80-195,844.32-78,247.48

Finding the Fourth Proportional to 141,909.80, 195,844.32 and 78,247.48

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Solution

The fourth proportional to 141,909.80, 195,844.32 and 78,247.48 is: 107,986.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,909.80 : 195,844.32 = 78,247.48 : x
  2. Step 2: Convert to fraction form
    141,909.80/195,844.32 = 78,247.48/x
  3. Step 3: Cross multiply
    141,909.80x = 195,844.32 × 78,247.48
  4. Step 4: Simplify right side
    141,909.80x = 15,324,324,512.31
  5. Step 5: Solve for x
    x = 15,324,324,512.31/141,909.80
  6. Step 6: Final answer
    x = 107,986.37

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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.