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Finding the Third Proportional to 103,627 and 128,565

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Solution

The third proportional to 103,627 and 128,565 is: 159,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,627 : 128,565 = 128,565 : x
  2. Step 2: Convert to fraction form
    103,627/128,565 = 128,565/x
  3. Step 3: Cross multiply
    103,627x = 128,565 × 128,565
  4. Step 4: Simplify right side
    103,627x = 16,528,959,225
  5. Step 5: Solve for x
    x = 16,528,959,225/103,627
  6. Step 6: Final answer
    x = 159,504.37

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Why These Related Problems?

These problems maintain the same ratio (1.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.