Home / 101,086.26-139,456.13-74,182.11

Finding the Fourth Proportional to 101,086.26, 139,456.13 and 74,182.11

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Solution

The fourth proportional to 101,086.26, 139,456.13 and 74,182.11 is: 102,339.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,086.26 : 139,456.13 = 74,182.11 : x
  2. Step 2: Convert to fraction form
    101,086.26/139,456.13 = 74,182.11/x
  3. Step 3: Cross multiply
    101,086.26x = 139,456.13 × 74,182.11
  4. Step 4: Simplify right side
    101,086.26x = 10,345,149,604.92
  5. Step 5: Solve for x
    x = 10,345,149,604.92/101,086.26
  6. Step 6: Final answer
    x = 102,339.82

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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.