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Finding the Third Proportional to 102,580 and 155,243

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Solution

The third proportional to 102,580 and 155,243 is: 234,942.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,580 : 155,243 = 155,243 : x
  2. Step 2: Convert to fraction form
    102,580/155,243 = 155,243/x
  3. Step 3: Cross multiply
    102,580x = 155,243 × 155,243
  4. Step 4: Simplify right side
    102,580x = 24,100,389,049
  5. Step 5: Solve for x
    x = 24,100,389,049/102,580
  6. Step 6: Final answer
    x = 234,942.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.