Home / 68,156.75-102,239.19-21,409.62

Finding the Fourth Proportional to 68,156.75, 102,239.19 and 21,409.62

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Solution

The fourth proportional to 68,156.75, 102,239.19 and 21,409.62 is: 32,115.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,156.75 : 102,239.19 = 21,409.62 : x
  2. Step 2: Convert to fraction form
    68,156.75/102,239.19 = 21,409.62/x
  3. Step 3: Cross multiply
    68,156.75x = 102,239.19 × 21,409.62
  4. Step 4: Simplify right side
    68,156.75x = 2,188,902,207.01
  5. Step 5: Solve for x
    x = 2,188,902,207.01/68,156.75
  6. Step 6: Final answer
    x = 32,115.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.