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Finding the Third Proportional to 133,560 and 205,380

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Solution

The third proportional to 133,560 and 205,380 is: 315,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,560 : 205,380 = 205,380 : x
  2. Step 2: Convert to fraction form
    133,560/205,380 = 205,380/x
  3. Step 3: Cross multiply
    133,560x = 205,380 × 205,380
  4. Step 4: Simplify right side
    133,560x = 42,180,944,400
  5. Step 5: Solve for x
    x = 42,180,944,400/133,560
  6. Step 6: Final answer
    x = 315,820.19

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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.