Home / 82,129.97-113,236.67-68,537.61

Finding the Fourth Proportional to 82,129.97, 113,236.67 and 68,537.61

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Solution

The fourth proportional to 82,129.97, 113,236.67 and 68,537.61 is: 94,496.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,129.97 : 113,236.67 = 68,537.61 : x
  2. Step 2: Convert to fraction form
    82,129.97/113,236.67 = 68,537.61/x
  3. Step 3: Cross multiply
    82,129.97x = 113,236.67 × 68,537.61
  4. Step 4: Simplify right side
    82,129.97x = 7,760,970,897.50
  5. Step 5: Solve for x
    x = 7,760,970,897.50/82,129.97
  6. Step 6: Final answer
    x = 94,496.21

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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.