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Finding the Third Proportional to 75,978 and 162,972

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Solution

The third proportional to 75,978 and 162,972 is: 349,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,978 : 162,972 = 162,972 : x
  2. Step 2: Convert to fraction form
    75,978/162,972 = 162,972/x
  3. Step 3: Cross multiply
    75,978x = 162,972 × 162,972
  4. Step 4: Simplify right side
    75,978x = 26,559,872,784
  5. Step 5: Solve for x
    x = 26,559,872,784/75,978
  6. Step 6: Final answer
    x = 349,573.20

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These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.