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Finding the Fourth Proportional to 207,115.92, 310,608 and 66,841.92

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Solution

The fourth proportional to 207,115.92, 310,608 and 66,841.92 is: 100,241.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,115.92 : 310,608 = 66,841.92 : x
  2. Step 2: Convert to fraction form
    207,115.92/310,608 = 66,841.92/x
  3. Step 3: Cross multiply
    207,115.92x = 310,608 × 66,841.92
  4. Step 4: Simplify right side
    207,115.92x = 20,761,635,087.36
  5. Step 5: Solve for x
    x = 20,761,635,087.36/207,115.92
  6. Step 6: Final answer
    x = 100,241.62

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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.