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Finding the Fourth Proportional to 68,090.88, 102,133.24 and 18,169.87

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Solution

The fourth proportional to 68,090.88, 102,133.24 and 18,169.87 is: 27,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,090.88 : 102,133.24 = 18,169.87 : x
  2. Step 2: Convert to fraction form
    68,090.88/102,133.24 = 18,169.87/x
  3. Step 3: Cross multiply
    68,090.88x = 102,133.24 × 18,169.87
  4. Step 4: Simplify right side
    68,090.88x = 1,855,747,660.87
  5. Step 5: Solve for x
    x = 1,855,747,660.87/68,090.88
  6. Step 6: Final answer
    x = 27,253.98

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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.