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Finding the Third Proportional to 100,138 and 155,951

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Solution

The third proportional to 100,138 and 155,951 is: 242,871.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,138 : 155,951 = 155,951 : x
  2. Step 2: Convert to fraction form
    100,138/155,951 = 155,951/x
  3. Step 3: Cross multiply
    100,138x = 155,951 × 155,951
  4. Step 4: Simplify right side
    100,138x = 24,320,714,401
  5. Step 5: Solve for x
    x = 24,320,714,401/100,138
  6. Step 6: Final answer
    x = 242,871.98

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.