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Finding the Third Proportional to 89,697 and 138,798

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Solution

The third proportional to 89,697 and 138,798 is: 214,777.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,697 : 138,798 = 138,798 : x
  2. Step 2: Convert to fraction form
    89,697/138,798 = 138,798/x
  3. Step 3: Cross multiply
    89,697x = 138,798 × 138,798
  4. Step 4: Simplify right side
    89,697x = 19,264,884,804
  5. Step 5: Solve for x
    x = 19,264,884,804/89,697
  6. Step 6: Final answer
    x = 214,777.36

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.