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Finding the Fourth Proportional to 122,910.70, 169,616.27 and 69,195.82

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Solution

The fourth proportional to 122,910.70, 169,616.27 and 69,195.82 is: 95,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,910.70 : 169,616.27 = 69,195.82 : x
  2. Step 2: Convert to fraction form
    122,910.70/169,616.27 = 69,195.82/x
  3. Step 3: Cross multiply
    122,910.70x = 169,616.27 × 69,195.82
  4. Step 4: Simplify right side
    122,910.70x = 11,736,736,636.94
  5. Step 5: Solve for x
    x = 11,736,736,636.94/122,910.70
  6. Step 6: Final answer
    x = 95,489.95

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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.