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Finding the Fourth Proportional to 122,611.09, 169,218.42 and 68,894.94

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Solution

The fourth proportional to 122,611.09, 169,218.42 and 68,894.94 is: 95,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,611.09 : 169,218.42 = 68,894.94 : x
  2. Step 2: Convert to fraction form
    122,611.09/169,218.42 = 68,894.94/x
  3. Step 3: Cross multiply
    122,611.09x = 169,218.42 × 68,894.94
  4. Step 4: Simplify right side
    122,611.09x = 11,658,292,892.79
  5. Step 5: Solve for x
    x = 11,658,292,892.79/122,611.09
  6. Step 6: Final answer
    x = 95,083.51

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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.