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Finding the Fourth Proportional to 122,684.92, 169,300.82 and 68,236.80

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Solution

The fourth proportional to 122,684.92, 169,300.82 and 68,236.80 is: 94,164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,684.92 : 169,300.82 = 68,236.80 : x
  2. Step 2: Convert to fraction form
    122,684.92/169,300.82 = 68,236.80/x
  3. Step 3: Cross multiply
    122,684.92x = 169,300.82 × 68,236.80
  4. Step 4: Simplify right side
    122,684.92x = 11,552,546,194.18
  5. Step 5: Solve for x
    x = 11,552,546,194.18/122,684.92
  6. Step 6: Final answer
    x = 94,164.35

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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.