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Finding the Fourth Proportional to 122,443.74, 168,960.68 and 68,716.44

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Solution

The fourth proportional to 122,443.74, 168,960.68 and 68,716.44 is: 94,822.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,443.74 : 168,960.68 = 68,716.44 : x
  2. Step 2: Convert to fraction form
    122,443.74/168,960.68 = 68,716.44/x
  3. Step 3: Cross multiply
    122,443.74x = 168,960.68 × 68,716.44
  4. Step 4: Simplify right side
    122,443.74x = 11,610,376,429.58
  5. Step 5: Solve for x
    x = 11,610,376,429.58/122,443.74
  6. Step 6: Final answer
    x = 94,822.13

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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.