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Finding the Third Proportional to 128,592 and 199,092

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Solution

The third proportional to 128,592 and 199,092 is: 308,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,592 : 199,092 = 199,092 : x
  2. Step 2: Convert to fraction form
    128,592/199,092 = 199,092/x
  3. Step 3: Cross multiply
    128,592x = 199,092 × 199,092
  4. Step 4: Simplify right side
    128,592x = 39,637,624,464
  5. Step 5: Solve for x
    x = 39,637,624,464/128,592
  6. Step 6: Final answer
    x = 308,243.32

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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.