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Finding the Fourth Proportional to 208,891.97, 313,334.47 and 66,736.23

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Solution

The fourth proportional to 208,891.97, 313,334.47 and 66,736.23 is: 100,103.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,891.97 : 313,334.47 = 66,736.23 : x
  2. Step 2: Convert to fraction form
    208,891.97/313,334.47 = 66,736.23/x
  3. Step 3: Cross multiply
    208,891.97x = 313,334.47 × 66,736.23
  4. Step 4: Simplify right side
    208,891.97x = 20,910,761,256.85
  5. Step 5: Solve for x
    x = 20,910,761,256.85/208,891.97
  6. Step 6: Final answer
    x = 100,103.23

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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.