Home / 81,324.07-122,059-68,079.96

Finding the Fourth Proportional to 81,324.07, 122,059 and 68,079.96

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Solution

The fourth proportional to 81,324.07, 122,059 and 68,079.96 is: 102,180.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,324.07 : 122,059 = 68,079.96 : x
  2. Step 2: Convert to fraction form
    81,324.07/122,059 = 68,079.96/x
  3. Step 3: Cross multiply
    81,324.07x = 122,059 × 68,079.96
  4. Step 4: Simplify right side
    81,324.07x = 8,309,771,837.64
  5. Step 5: Solve for x
    x = 8,309,771,837.64/81,324.07
  6. Step 6: Final answer
    x = 102,180.96

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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.