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Finding the Third Proportional to 69,580 and 104,690

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Solution

The third proportional to 69,580 and 104,690 is: 157,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,580 : 104,690 = 104,690 : x
  2. Step 2: Convert to fraction form
    69,580/104,690 = 104,690/x
  3. Step 3: Cross multiply
    69,580x = 104,690 × 104,690
  4. Step 4: Simplify right side
    69,580x = 10,959,996,100
  5. Step 5: Solve for x
    x = 10,959,996,100/69,580
  6. Step 6: Final answer
    x = 157,516.47

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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.