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Finding the Third Proportional to 69,619.50 and 147,177

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Solution

The third proportional to 69,619.50 and 147,177 is: 311,135.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,619.50 : 147,177 = 147,177 : x
  2. Step 2: Convert to fraction form
    69,619.50/147,177 = 147,177/x
  3. Step 3: Cross multiply
    69,619.50x = 147,177 × 147,177
  4. Step 4: Simplify right side
    69,619.50x = 21,661,069,329
  5. Step 5: Solve for x
    x = 21,661,069,329/69,619.50
  6. Step 6: Final answer
    x = 311,135.09

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.