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Finding the Third Proportional to 109,135 and 168,207

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Solution

The third proportional to 109,135 and 168,207 is: 259,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,135 : 168,207 = 168,207 : x
  2. Step 2: Convert to fraction form
    109,135/168,207 = 168,207/x
  3. Step 3: Cross multiply
    109,135x = 168,207 × 168,207
  4. Step 4: Simplify right side
    109,135x = 28,293,594,849
  5. Step 5: Solve for x
    x = 28,293,594,849/109,135
  6. Step 6: Final answer
    x = 259,253.17

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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.