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Finding the Fourth Proportional to 68,147.94, 102,222.99 and 20,764.02

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Solution

The fourth proportional to 68,147.94, 102,222.99 and 20,764.02 is: 31,146.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,147.94 : 102,222.99 = 20,764.02 : x
  2. Step 2: Convert to fraction form
    68,147.94/102,222.99 = 20,764.02/x
  3. Step 3: Cross multiply
    68,147.94x = 102,222.99 × 20,764.02
  4. Step 4: Simplify right side
    68,147.94x = 2,122,560,208.82
  5. Step 5: Solve for x
    x = 2,122,560,208.82/68,147.94
  6. Step 6: Final answer
    x = 31,146.36

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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.