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Finding the Fourth Proportional to 68,131, 102,202.26 and 18,883

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Solution

The fourth proportional to 68,131, 102,202.26 and 18,883 is: 28,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,131 : 102,202.26 = 18,883 : x
  2. Step 2: Convert to fraction form
    68,131/102,202.26 = 18,883/x
  3. Step 3: Cross multiply
    68,131x = 102,202.26 × 18,883
  4. Step 4: Simplify right side
    68,131x = 1,929,885,275.58
  5. Step 5: Solve for x
    x = 1,929,885,275.58/68,131
  6. Step 6: Final answer
    x = 28,326.10

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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.