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Finding the Fourth Proportional to 122,511.87, 169,066.39 and 68,796.92

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Solution

The fourth proportional to 122,511.87, 169,066.39 and 68,796.92 is: 94,939.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,511.87 : 169,066.39 = 68,796.92 : x
  2. Step 2: Convert to fraction form
    122,511.87/169,066.39 = 68,796.92/x
  3. Step 3: Cross multiply
    122,511.87x = 169,066.39 × 68,796.92
  4. Step 4: Simplify right side
    122,511.87x = 11,631,246,811.69
  5. Step 5: Solve for x
    x = 11,631,246,811.69/122,511.87
  6. Step 6: Final answer
    x = 94,939.76

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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.