Home / 141,920.10-195,851.79-78,257.88

Finding the Fourth Proportional to 141,920.10, 195,851.79 and 78,257.88

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Solution

The fourth proportional to 141,920.10, 195,851.79 and 78,257.88 is: 107,997.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,920.10 : 195,851.79 = 78,257.88 : x
  2. Step 2: Convert to fraction form
    141,920.10/195,851.79 = 78,257.88/x
  3. Step 3: Cross multiply
    141,920.10x = 195,851.79 × 78,257.88
  4. Step 4: Simplify right side
    141,920.10x = 15,326,945,879.61
  5. Step 5: Solve for x
    x = 15,326,945,879.61/141,920.10
  6. Step 6: Final answer
    x = 107,997.01

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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.