Home / 68,131.14-102,201.03-21,385.86

Finding the Fourth Proportional to 68,131.14, 102,201.03 and 21,385.86

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Solution

The fourth proportional to 68,131.14, 102,201.03 and 21,385.86 is: 32,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,131.14 : 102,201.03 = 21,385.86 : x
  2. Step 2: Convert to fraction form
    68,131.14/102,201.03 = 21,385.86/x
  3. Step 3: Cross multiply
    68,131.14x = 102,201.03 × 21,385.86
  4. Step 4: Simplify right side
    68,131.14x = 2,185,656,919.44
  5. Step 5: Solve for x
    x = 2,185,656,919.44/68,131.14
  6. Step 6: Final answer
    x = 32,080.15

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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.