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Finding the Fourth Proportional to 141,081.97, 194,695.55 and 77,425.69

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Solution

The fourth proportional to 141,081.97, 194,695.55 and 77,425.69 is: 106,848.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,081.97 : 194,695.55 = 77,425.69 : x
  2. Step 2: Convert to fraction form
    141,081.97/194,695.55 = 77,425.69/x
  3. Step 3: Cross multiply
    141,081.97x = 194,695.55 × 77,425.69
  4. Step 4: Simplify right side
    141,081.97x = 15,074,437,298.68
  5. Step 5: Solve for x
    x = 15,074,437,298.68/141,081.97
  6. Step 6: Final answer
    x = 106,848.79

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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.