Home / 141,691.25-195,535.25-78,029.50

Finding the Fourth Proportional to 141,691.25, 195,535.25 and 78,029.50

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Solution

The fourth proportional to 141,691.25, 195,535.25 and 78,029.50 is: 107,681.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,691.25 : 195,535.25 = 78,029.50 : x
  2. Step 2: Convert to fraction form
    141,691.25/195,535.25 = 78,029.50/x
  3. Step 3: Cross multiply
    141,691.25x = 195,535.25 × 78,029.50
  4. Step 4: Simplify right side
    141,691.25x = 15,257,517,789.88
  5. Step 5: Solve for x
    x = 15,257,517,789.88/141,691.25
  6. Step 6: Final answer
    x = 107,681.44

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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.