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Finding the Third Proportional to 128,855 and 181,456

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Solution

The third proportional to 128,855 and 181,456 is: 255,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,855 : 181,456 = 181,456 : x
  2. Step 2: Convert to fraction form
    128,855/181,456 = 181,456/x
  3. Step 3: Cross multiply
    128,855x = 181,456 × 181,456
  4. Step 4: Simplify right side
    128,855x = 32,926,279,936
  5. Step 5: Solve for x
    x = 32,926,279,936/128,855
  6. Step 6: Final answer
    x = 255,529.70

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.