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Finding the Third Proportional to 128,442 and 170,427

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Solution

The third proportional to 128,442 and 170,427 is: 226,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,442 : 170,427 = 170,427 : x
  2. Step 2: Convert to fraction form
    128,442/170,427 = 170,427/x
  3. Step 3: Cross multiply
    128,442x = 170,427 × 170,427
  4. Step 4: Simplify right side
    128,442x = 29,045,362,329
  5. Step 5: Solve for x
    x = 29,045,362,329/128,442
  6. Step 6: Final answer
    x = 226,136.02

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.