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Finding the Third Proportional to 87,459.75 and 139,074.75

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Solution

The third proportional to 87,459.75 and 139,074.75 is: 221,150.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,459.75 : 139,074.75 = 139,074.75 : x
  2. Step 2: Convert to fraction form
    87,459.75/139,074.75 = 139,074.75/x
  3. Step 3: Cross multiply
    87,459.75x = 139,074.75 × 139,074.75
  4. Step 4: Simplify right side
    87,459.75x = 19,341,786,087.56
  5. Step 5: Solve for x
    x = 19,341,786,087.56/87,459.75
  6. Step 6: Final answer
    x = 221,150.71

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.