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Finding the Fourth Proportional to 122,689.58, 169,310.60 and 68,974.83

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Solution

The fourth proportional to 122,689.58, 169,310.60 and 68,974.83 is: 95,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,689.58 : 169,310.60 = 68,974.83 : x
  2. Step 2: Convert to fraction form
    122,689.58/169,310.60 = 68,974.83/x
  3. Step 3: Cross multiply
    122,689.58x = 169,310.60 × 68,974.83
  4. Step 4: Simplify right side
    122,689.58x = 11,678,169,507.32
  5. Step 5: Solve for x
    x = 11,678,169,507.32/122,689.58
  6. Step 6: Final answer
    x = 95,184.69

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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.