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Finding the Third Proportional to 111,289.88 and 172,581.75

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Solution

The third proportional to 111,289.88 and 172,581.75 is: 267,629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,289.88 : 172,581.75 = 172,581.75 : x
  2. Step 2: Convert to fraction form
    111,289.88/172,581.75 = 172,581.75/x
  3. Step 3: Cross multiply
    111,289.88x = 172,581.75 × 172,581.75
  4. Step 4: Simplify right side
    111,289.88x = 29,784,460,433.06
  5. Step 5: Solve for x
    x = 29,784,460,433.06/111,289.88
  6. Step 6: Final answer
    x = 267,629.56

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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.