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Finding the Third Proportional to 72,986 and 157,226

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Solution

The third proportional to 72,986 and 157,226 is: 338,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,986 : 157,226 = 157,226 : x
  2. Step 2: Convert to fraction form
    72,986/157,226 = 157,226/x
  3. Step 3: Cross multiply
    72,986x = 157,226 × 157,226
  4. Step 4: Simplify right side
    72,986x = 24,720,015,076
  5. Step 5: Solve for x
    x = 24,720,015,076/72,986
  6. Step 6: Final answer
    x = 338,695.30

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.