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Finding the Fourth Proportional to 208,893.26, 313,309.82 and 66,754.74

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Solution

The fourth proportional to 208,893.26, 313,309.82 and 66,754.74 is: 100,122.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,893.26 : 313,309.82 = 66,754.74 : x
  2. Step 2: Convert to fraction form
    208,893.26/313,309.82 = 66,754.74/x
  3. Step 3: Cross multiply
    208,893.26x = 313,309.82 × 66,754.74
  4. Step 4: Simplify right side
    208,893.26x = 20,914,915,573.55
  5. Step 5: Solve for x
    x = 20,914,915,573.55/208,893.26
  6. Step 6: Final answer
    x = 100,122.50

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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.