Home / 141,912.62-195,829.40-78,249.06

Finding the Fourth Proportional to 141,912.62, 195,829.40 and 78,249.06

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Solution

The fourth proportional to 141,912.62, 195,829.40 and 78,249.06 is: 107,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,912.62 : 195,829.40 = 78,249.06 : x
  2. Step 2: Convert to fraction form
    141,912.62/195,829.40 = 78,249.06/x
  3. Step 3: Cross multiply
    141,912.62x = 195,829.40 × 78,249.06
  4. Step 4: Simplify right side
    141,912.62x = 15,323,466,470.36
  5. Step 5: Solve for x
    x = 15,323,466,470.36/141,912.62
  6. Step 6: Final answer
    x = 107,978.18

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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.