Home / 141,915.76-195,845.08-78,255.84

Finding the Fourth Proportional to 141,915.76, 195,845.08 and 78,255.84

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Solution

The fourth proportional to 141,915.76, 195,845.08 and 78,255.84 is: 107,993.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,915.76 : 195,845.08 = 78,255.84 : x
  2. Step 2: Convert to fraction form
    141,915.76/195,845.08 = 78,255.84/x
  3. Step 3: Cross multiply
    141,915.76x = 195,845.08 × 78,255.84
  4. Step 4: Simplify right side
    141,915.76x = 15,326,021,245.27
  5. Step 5: Solve for x
    x = 15,326,021,245.27/141,915.76
  6. Step 6: Final answer
    x = 107,993.79

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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.