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Finding the Third Proportional to 74,378 and 104,271

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Solution

The third proportional to 74,378 and 104,271 is: 146,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,378 : 104,271 = 104,271 : x
  2. Step 2: Convert to fraction form
    74,378/104,271 = 104,271/x
  3. Step 3: Cross multiply
    74,378x = 104,271 × 104,271
  4. Step 4: Simplify right side
    74,378x = 10,872,441,441
  5. Step 5: Solve for x
    x = 10,872,441,441/74,378
  6. Step 6: Final answer
    x = 146,178.19

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.