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Finding the Third Proportional to 74,646 and 115,575

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Solution

The third proportional to 74,646 and 115,575 is: 178,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,646 : 115,575 = 115,575 : x
  2. Step 2: Convert to fraction form
    74,646/115,575 = 115,575/x
  3. Step 3: Cross multiply
    74,646x = 115,575 × 115,575
  4. Step 4: Simplify right side
    74,646x = 13,357,580,625
  5. Step 5: Solve for x
    x = 13,357,580,625/74,646
  6. Step 6: Final answer
    x = 178,945.70

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.