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Finding the Fourth Proportional to 91,396, 125,846.08 and 80,001.73

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Solution

The fourth proportional to 91,396, 125,846.08 and 80,001.73 is: 110,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,396 : 125,846.08 = 80,001.73 : x
  2. Step 2: Convert to fraction form
    91,396/125,846.08 = 80,001.73/x
  3. Step 3: Cross multiply
    91,396x = 125,846.08 × 80,001.73
  4. Step 4: Simplify right side
    91,396x = 10,067,904,113.72
  5. Step 5: Solve for x
    x = 10,067,904,113.72/91,396
  6. Step 6: Final answer
    x = 110,156.94

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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.