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Finding the Fourth Proportional to 207,907.62, 311,829.03 and 67,665.30

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Solution

The fourth proportional to 207,907.62, 311,829.03 and 67,665.30 is: 101,487.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,907.62 : 311,829.03 = 67,665.30 : x
  2. Step 2: Convert to fraction form
    207,907.62/311,829.03 = 67,665.30/x
  3. Step 3: Cross multiply
    207,907.62x = 311,829.03 × 67,665.30
  4. Step 4: Simplify right side
    207,907.62x = 21,100,004,863.66
  5. Step 5: Solve for x
    x = 21,100,004,863.66/207,907.62
  6. Step 6: Final answer
    x = 101,487.41

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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.