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Finding the Third Proportional to 120,618 and 177,419

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Solution

The third proportional to 120,618 and 177,419 is: 260,968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,618 : 177,419 = 177,419 : x
  2. Step 2: Convert to fraction form
    120,618/177,419 = 177,419/x
  3. Step 3: Cross multiply
    120,618x = 177,419 × 177,419
  4. Step 4: Simplify right side
    120,618x = 31,477,501,561
  5. Step 5: Solve for x
    x = 31,477,501,561/120,618
  6. Step 6: Final answer
    x = 260,968.53

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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.