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Finding the Third Proportional to 76,686.25 and 157,090.75

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Solution

The third proportional to 76,686.25 and 157,090.75 is: 321,798.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,686.25 : 157,090.75 = 157,090.75 : x
  2. Step 2: Convert to fraction form
    76,686.25/157,090.75 = 157,090.75/x
  3. Step 3: Cross multiply
    76,686.25x = 157,090.75 × 157,090.75
  4. Step 4: Simplify right side
    76,686.25x = 24,677,503,735.56
  5. Step 5: Solve for x
    x = 24,677,503,735.56/76,686.25
  6. Step 6: Final answer
    x = 321,798.29

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.