Home / 141,913.12-195,839.90-78,251.07

Finding the Fourth Proportional to 141,913.12, 195,839.90 and 78,251.07

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Solution

The fourth proportional to 141,913.12, 195,839.90 and 78,251.07 is: 107,986.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,913.12 : 195,839.90 = 78,251.07 : x
  2. Step 2: Convert to fraction form
    141,913.12/195,839.90 = 78,251.07/x
  3. Step 3: Cross multiply
    141,913.12x = 195,839.90 × 78,251.07
  4. Step 4: Simplify right side
    141,913.12x = 15,324,681,723.69
  5. Step 5: Solve for x
    x = 15,324,681,723.69/141,913.12
  6. Step 6: Final answer
    x = 107,986.36

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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.