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Finding the Third Proportional to 85,090 and 180,940

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Solution

The third proportional to 85,090 and 180,940 is: 384,760.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,090 : 180,940 = 180,940 : x
  2. Step 2: Convert to fraction form
    85,090/180,940 = 180,940/x
  3. Step 3: Cross multiply
    85,090x = 180,940 × 180,940
  4. Step 4: Simplify right side
    85,090x = 32,739,283,600
  5. Step 5: Solve for x
    x = 32,739,283,600/85,090
  6. Step 6: Final answer
    x = 384,760.65

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.