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Finding the Fourth Proportional to 122,704.84, 169,328.31 and 68,992.93

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Solution

The fourth proportional to 122,704.84, 169,328.31 and 68,992.93 is: 95,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,704.84 : 169,328.31 = 68,992.93 : x
  2. Step 2: Convert to fraction form
    122,704.84/169,328.31 = 68,992.93/x
  3. Step 3: Cross multiply
    122,704.84x = 169,328.31 × 68,992.93
  4. Step 4: Simplify right side
    122,704.84x = 11,682,456,238.85
  5. Step 5: Solve for x
    x = 11,682,456,238.85/122,704.84
  6. Step 6: Final answer
    x = 95,207.79

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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.