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Finding the Third Proportional to 78,646.50 and 170,412.75

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Solution

The third proportional to 78,646.50 and 170,412.75 is: 369,253.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,646.50 : 170,412.75 = 170,412.75 : x
  2. Step 2: Convert to fraction form
    78,646.50/170,412.75 = 170,412.75/x
  3. Step 3: Cross multiply
    78,646.50x = 170,412.75 × 170,412.75
  4. Step 4: Simplify right side
    78,646.50x = 29,040,505,362.56
  5. Step 5: Solve for x
    x = 29,040,505,362.56/78,646.50
  6. Step 6: Final answer
    x = 369,253.63

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.