Home / 141,963.90-195,915.96-78,305.73

Finding the Fourth Proportional to 141,963.90, 195,915.96 and 78,305.73

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Solution

The fourth proportional to 141,963.90, 195,915.96 and 78,305.73 is: 108,065.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,963.90 : 195,915.96 = 78,305.73 : x
  2. Step 2: Convert to fraction form
    141,963.90/195,915.96 = 78,305.73/x
  3. Step 3: Cross multiply
    141,963.90x = 195,915.96 × 78,305.73
  4. Step 4: Simplify right side
    141,963.90x = 15,341,342,266.45
  5. Step 5: Solve for x
    x = 15,341,342,266.45/141,963.90
  6. Step 6: Final answer
    x = 108,065.09

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1.5x scale

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.