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Finding the Third Proportional to 103,630 and 131,457

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Solution

The third proportional to 103,630 and 131,457 is: 166,756.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630 : 131,457 = 131,457 : x
  2. Step 2: Convert to fraction form
    103,630/131,457 = 131,457/x
  3. Step 3: Cross multiply
    103,630x = 131,457 × 131,457
  4. Step 4: Simplify right side
    103,630x = 17,280,942,849
  5. Step 5: Solve for x
    x = 17,280,942,849/103,630
  6. Step 6: Final answer
    x = 166,756.18

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.