Home / 141,821.38-195,717.55-78,163.28

Finding the Fourth Proportional to 141,821.38, 195,717.55 and 78,163.28

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Solution

The fourth proportional to 141,821.38, 195,717.55 and 78,163.28 is: 107,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,821.38 : 195,717.55 = 78,163.28 : x
  2. Step 2: Convert to fraction form
    141,821.38/195,717.55 = 78,163.28/x
  3. Step 3: Cross multiply
    141,821.38x = 195,717.55 × 78,163.28
  4. Step 4: Simplify right side
    141,821.38x = 15,297,924,682.98
  5. Step 5: Solve for x
    x = 15,297,924,682.98/141,821.38
  6. Step 6: Final answer
    x = 107,867.55

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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.