Home / 141,855.05-195,757.16-78,192.88

Finding the Fourth Proportional to 141,855.05, 195,757.16 and 78,192.88

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Solution

The fourth proportional to 141,855.05, 195,757.16 and 78,192.88 is: 107,904.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,855.05 : 195,757.16 = 78,192.88 : x
  2. Step 2: Convert to fraction form
    141,855.05/195,757.16 = 78,192.88/x
  3. Step 3: Cross multiply
    141,855.05x = 195,757.16 × 78,192.88
  4. Step 4: Simplify right side
    141,855.05x = 15,306,815,240.66
  5. Step 5: Solve for x
    x = 15,306,815,240.66/141,855.05
  6. Step 6: Final answer
    x = 107,904.62

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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.