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Finding the Third Proportional to 84,378 and 123,235

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Solution

The third proportional to 84,378 and 123,235 is: 179,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,378 : 123,235 = 123,235 : x
  2. Step 2: Convert to fraction form
    84,378/123,235 = 123,235/x
  3. Step 3: Cross multiply
    84,378x = 123,235 × 123,235
  4. Step 4: Simplify right side
    84,378x = 15,186,865,225
  5. Step 5: Solve for x
    x = 15,186,865,225/84,378
  6. Step 6: Final answer
    x = 179,986.08

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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.