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Finding the Third Proportional to 87,455.25 and 139,065.75

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Solution

The third proportional to 87,455.25 and 139,065.75 is: 221,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,455.25 : 139,065.75 = 139,065.75 : x
  2. Step 2: Convert to fraction form
    87,455.25/139,065.75 = 139,065.75/x
  3. Step 3: Cross multiply
    87,455.25x = 139,065.75 × 139,065.75
  4. Step 4: Simplify right side
    87,455.25x = 19,339,282,823.06
  5. Step 5: Solve for x
    x = 19,339,282,823.06/87,455.25
  6. Step 6: Final answer
    x = 221,133.47

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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.