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Finding the Third Proportional to 89,890 and 129,482

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Solution

The third proportional to 89,890 and 129,482 is: 186,512.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,890 : 129,482 = 129,482 : x
  2. Step 2: Convert to fraction form
    89,890/129,482 = 129,482/x
  3. Step 3: Cross multiply
    89,890x = 129,482 × 129,482
  4. Step 4: Simplify right side
    89,890x = 16,765,588,324
  5. Step 5: Solve for x
    x = 16,765,588,324/89,890
  6. Step 6: Final answer
    x = 186,512.27

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.