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Finding the Third Proportional to 85,598 and 128,655

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Solution

The third proportional to 85,598 and 128,655 is: 193,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,598 : 128,655 = 128,655 : x
  2. Step 2: Convert to fraction form
    85,598/128,655 = 128,655/x
  3. Step 3: Cross multiply
    85,598x = 128,655 × 128,655
  4. Step 4: Simplify right side
    85,598x = 16,552,109,025
  5. Step 5: Solve for x
    x = 16,552,109,025/85,598
  6. Step 6: Final answer
    x = 193,370.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.