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Finding the Fourth Proportional to 199,927.59, 299,906.85 and 66,808.31

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Solution

The fourth proportional to 199,927.59, 299,906.85 and 66,808.31 is: 100,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,927.59 : 299,906.85 = 66,808.31 : x
  2. Step 2: Convert to fraction form
    199,927.59/299,906.85 = 66,808.31/x
  3. Step 3: Cross multiply
    199,927.59x = 299,906.85 × 66,808.31
  4. Step 4: Simplify right side
    199,927.59x = 20,036,269,805.92
  5. Step 5: Solve for x
    x = 20,036,269,805.92/199,927.59
  6. Step 6: Final answer
    x = 100,217.63

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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.