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Finding the Fourth Proportional to 141,855.69, 195,760.88 and 78,194.88

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Solution

The fourth proportional to 141,855.69, 195,760.88 and 78,194.88 is: 107,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.69 : 195,760.88 = 78,194.88 : x
  2. Step 2: Convert to fraction form
    141,855.69/195,760.88 = 78,194.88/x
  3. Step 3: Cross multiply
    141,855.69x = 195,760.88 × 78,194.88
  4. Step 4: Simplify right side
    141,855.69x = 15,307,498,129.32
  5. Step 5: Solve for x
    x = 15,307,498,129.32/141,855.69
  6. Step 6: Final answer
    x = 107,908.95

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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.