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Finding the Fourth Proportional to 122,529.87, 169,091.25 and 68,814.96

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Solution

The fourth proportional to 122,529.87, 169,091.25 and 68,814.96 is: 94,964.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,529.87 : 169,091.25 = 68,814.96 : x
  2. Step 2: Convert to fraction form
    122,529.87/169,091.25 = 68,814.96/x
  3. Step 3: Cross multiply
    122,529.87x = 169,091.25 × 68,814.96
  4. Step 4: Simplify right side
    122,529.87x = 11,636,007,605.10
  5. Step 5: Solve for x
    x = 11,636,007,605.10/122,529.87
  6. Step 6: Final answer
    x = 94,964.66

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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.