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Finding the Fourth Proportional to 68,091.88, 102,134.74 and 18,170.87

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Solution

The fourth proportional to 68,091.88, 102,134.74 and 18,170.87 is: 27,255.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,091.88 : 102,134.74 = 18,170.87 : x
  2. Step 2: Convert to fraction form
    68,091.88/102,134.74 = 18,170.87/x
  3. Step 3: Cross multiply
    68,091.88x = 102,134.74 × 18,170.87
  4. Step 4: Simplify right side
    68,091.88x = 1,855,877,083.02
  5. Step 5: Solve for x
    x = 1,855,877,083.02/68,091.88
  6. Step 6: Final answer
    x = 27,255.48

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1.5x scale

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.