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Finding the Third Proportional to 89,286 and 121,260

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Solution

The third proportional to 89,286 and 121,260 is: 164,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,286 : 121,260 = 121,260 : x
  2. Step 2: Convert to fraction form
    89,286/121,260 = 121,260/x
  3. Step 3: Cross multiply
    89,286x = 121,260 × 121,260
  4. Step 4: Simplify right side
    89,286x = 14,703,987,600
  5. Step 5: Solve for x
    x = 14,703,987,600/89,286
  6. Step 6: Final answer
    x = 164,684.13

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.