Home / 141,919.71-195,845-78,257.49

Finding the Fourth Proportional to 141,919.71, 195,845 and 78,257.49

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Solution

The fourth proportional to 141,919.71, 195,845 and 78,257.49 is: 107,993.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,919.71 : 195,845 = 78,257.49 : x
  2. Step 2: Convert to fraction form
    141,919.71/195,845 = 78,257.49/x
  3. Step 3: Cross multiply
    141,919.71x = 195,845 × 78,257.49
  4. Step 4: Simplify right side
    141,919.71x = 15,326,338,129.05
  5. Step 5: Solve for x
    x = 15,326,338,129.05/141,919.71
  6. Step 6: Final answer
    x = 107,993.02

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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.