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Finding the Third Proportional to 75,172.50 and 115,998.75

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Solution

The third proportional to 75,172.50 and 115,998.75 is: 178,997.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,172.50 : 115,998.75 = 115,998.75 : x
  2. Step 2: Convert to fraction form
    75,172.50/115,998.75 = 115,998.75/x
  3. Step 3: Cross multiply
    75,172.50x = 115,998.75 × 115,998.75
  4. Step 4: Simplify right side
    75,172.50x = 13,455,710,001.56
  5. Step 5: Solve for x
    x = 13,455,710,001.56/75,172.50
  6. Step 6: Final answer
    x = 178,997.77

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.