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Finding the Third Proportional to 137,070 and 205,605

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Solution

The third proportional to 137,070 and 205,605 is: 308,407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,070 : 205,605 = 205,605 : x
  2. Step 2: Convert to fraction form
    137,070/205,605 = 205,605/x
  3. Step 3: Cross multiply
    137,070x = 205,605 × 205,605
  4. Step 4: Simplify right side
    137,070x = 42,273,416,025
  5. Step 5: Solve for x
    x = 42,273,416,025/137,070
  6. Step 6: Final answer
    x = 308,407.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.