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Finding the Fourth Proportional to 208,891.23, 313,387.74 and 66,736.32

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Solution

The fourth proportional to 208,891.23, 313,387.74 and 66,736.32 is: 100,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,891.23 : 313,387.74 = 66,736.32 : x
  2. Step 2: Convert to fraction form
    208,891.23/313,387.74 = 66,736.32/x
  3. Step 3: Cross multiply
    208,891.23x = 313,387.74 × 66,736.32
  4. Step 4: Simplify right side
    208,891.23x = 20,914,344,500.72
  5. Step 5: Solve for x
    x = 20,914,344,500.72/208,891.23
  6. Step 6: Final answer
    x = 100,120.74

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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.