Home / 141,855.98-195,761.20-78,194.84

Finding the Fourth Proportional to 141,855.98, 195,761.20 and 78,194.84

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Solution

The fourth proportional to 141,855.98, 195,761.20 and 78,194.84 is: 107,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.98 : 195,761.20 = 78,194.84 : x
  2. Step 2: Convert to fraction form
    141,855.98/195,761.20 = 78,194.84/x
  3. Step 3: Cross multiply
    141,855.98x = 195,761.20 × 78,194.84
  4. Step 4: Simplify right side
    141,855.98x = 15,307,515,712.21
  5. Step 5: Solve for x
    x = 15,307,515,712.21/141,855.98
  6. Step 6: Final answer
    x = 107,908.85

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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.