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Finding the Third Proportional to 55,411 and 121,207

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Solution

The third proportional to 55,411 and 121,207 is: 265,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,411 : 121,207 = 121,207 : x
  2. Step 2: Convert to fraction form
    55,411/121,207 = 121,207/x
  3. Step 3: Cross multiply
    55,411x = 121,207 × 121,207
  4. Step 4: Simplify right side
    55,411x = 14,691,136,849
  5. Step 5: Solve for x
    x = 14,691,136,849/55,411
  6. Step 6: Final answer
    x = 265,130.33

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.