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Finding the Fourth Proportional to 141,049.93, 194,645.38 and 78,959.56

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Solution

The fourth proportional to 141,049.93, 194,645.38 and 78,959.56 is: 108,962.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,049.93 : 194,645.38 = 78,959.56 : x
  2. Step 2: Convert to fraction form
    141,049.93/194,645.38 = 78,959.56/x
  3. Step 3: Cross multiply
    141,049.93x = 194,645.38 × 78,959.56
  4. Step 4: Simplify right side
    141,049.93x = 15,369,113,560.83
  5. Step 5: Solve for x
    x = 15,369,113,560.83/141,049.93
  6. Step 6: Final answer
    x = 108,962.22

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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.