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Finding the Fourth Proportional to 122,796.90, 169,469.46 and 69,078.66

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Solution

The fourth proportional to 122,796.90, 169,469.46 and 69,078.66 is: 95,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,796.90 : 169,469.46 = 69,078.66 : x
  2. Step 2: Convert to fraction form
    122,796.90/169,469.46 = 69,078.66/x
  3. Step 3: Cross multiply
    122,796.90x = 169,469.46 × 69,078.66
  4. Step 4: Simplify right side
    122,796.90x = 11,706,723,207.72
  5. Step 5: Solve for x
    x = 11,706,723,207.72/122,796.90
  6. Step 6: Final answer
    x = 95,334.03

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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.