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Finding the Third Proportional to 81,513 and 124,701.19

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Solution

The third proportional to 81,513 and 124,701.19 is: 190,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,513 : 124,701.19 = 124,701.19 : x
  2. Step 2: Convert to fraction form
    81,513/124,701.19 = 124,701.19/x
  3. Step 3: Cross multiply
    81,513x = 124,701.19 × 124,701.19
  4. Step 4: Simplify right side
    81,513x = 15,550,386,163.91
  5. Step 5: Solve for x
    x = 15,550,386,163.91/81,513
  6. Step 6: Final answer
    x = 190,771.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.