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Finding the Fourth Proportional to 122,067.49, 168,378.59 and 80,674.41

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Solution

The fourth proportional to 122,067.49, 168,378.59 and 80,674.41 is: 111,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,067.49 : 168,378.59 = 80,674.41 : x
  2. Step 2: Convert to fraction form
    122,067.49/168,378.59 = 80,674.41/x
  3. Step 3: Cross multiply
    122,067.49x = 168,378.59 × 80,674.41
  4. Step 4: Simplify right side
    122,067.49x = 13,583,844,027.51
  5. Step 5: Solve for x
    x = 13,583,844,027.51/122,067.49
  6. Step 6: Final answer
    x = 111,281.43

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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.