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Finding the Third Proportional to 99,660 and 145,653

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Solution

The third proportional to 99,660 and 145,653 is: 212,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660 : 145,653 = 145,653 : x
  2. Step 2: Convert to fraction form
    99,660/145,653 = 145,653/x
  3. Step 3: Cross multiply
    99,660x = 145,653 × 145,653
  4. Step 4: Simplify right side
    99,660x = 21,214,796,409
  5. Step 5: Solve for x
    x = 21,214,796,409/99,660
  6. Step 6: Final answer
    x = 212,871.73

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.