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Finding the Fourth Proportional to 122,394.85, 183,644.52 and 69,126.82

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Solution

The fourth proportional to 122,394.85, 183,644.52 and 69,126.82 is: 103,719.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,394.85 : 183,644.52 = 69,126.82 : x
  2. Step 2: Convert to fraction form
    122,394.85/183,644.52 = 69,126.82/x
  3. Step 3: Cross multiply
    122,394.85x = 183,644.52 × 69,126.82
  4. Step 4: Simplify right side
    122,394.85x = 12,694,760,959.69
  5. Step 5: Solve for x
    x = 12,694,760,959.69/122,394.85
  6. Step 6: Final answer
    x = 103,719.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.