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Finding the Third Proportional to 120,645 and 177,453

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Solution

The third proportional to 120,645 and 177,453 is: 261,010.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,645 : 177,453 = 177,453 : x
  2. Step 2: Convert to fraction form
    120,645/177,453 = 177,453/x
  3. Step 3: Cross multiply
    120,645x = 177,453 × 177,453
  4. Step 4: Simplify right side
    120,645x = 31,489,567,209
  5. Step 5: Solve for x
    x = 31,489,567,209/120,645
  6. Step 6: Final answer
    x = 261,010.13

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.