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Finding the Fourth Proportional to 122,635.52, 169,241.30 and 68,919.46

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Solution

The fourth proportional to 122,635.52, 169,241.30 and 68,919.46 is: 95,111.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,635.52 : 169,241.30 = 68,919.46 : x
  2. Step 2: Convert to fraction form
    122,635.52/169,241.30 = 68,919.46/x
  3. Step 3: Cross multiply
    122,635.52x = 169,241.30 × 68,919.46
  4. Step 4: Simplify right side
    122,635.52x = 11,664,018,496.45
  5. Step 5: Solve for x
    x = 11,664,018,496.45/122,635.52
  6. Step 6: Final answer
    x = 95,111.26

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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.