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Finding the Third Proportional to 64,666 and 99,855

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Solution

The third proportional to 64,666 and 99,855 is: 154,192.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,666 : 99,855 = 99,855 : x
  2. Step 2: Convert to fraction form
    64,666/99,855 = 99,855/x
  3. Step 3: Cross multiply
    64,666x = 99,855 × 99,855
  4. Step 4: Simplify right side
    64,666x = 9,971,021,025
  5. Step 5: Solve for x
    x = 9,971,021,025/64,666
  6. Step 6: Final answer
    x = 154,192.64

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.