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Finding the Fourth Proportional to 68,129.87, 102,834.73 and 68,129.87

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Solution

The fourth proportional to 68,129.87, 102,834.73 and 68,129.87 is: 102,834.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,129.87 : 102,834.73 = 68,129.87 : x
  2. Step 2: Convert to fraction form
    68,129.87/102,834.73 = 68,129.87/x
  3. Step 3: Cross multiply
    68,129.87x = 102,834.73 × 68,129.87
  4. Step 4: Simplify right side
    68,129.87x = 7,006,116,786.39
  5. Step 5: Solve for x
    x = 7,006,116,786.39/68,129.87
  6. Step 6: Final answer
    x = 102,834.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.