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Finding the Third Proportional to 87,472 and 139,252.50

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Solution

The third proportional to 87,472 and 139,252.50 is: 221,685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,472 : 139,252.50 = 139,252.50 : x
  2. Step 2: Convert to fraction form
    87,472/139,252.50 = 139,252.50/x
  3. Step 3: Cross multiply
    87,472x = 139,252.50 × 139,252.50
  4. Step 4: Simplify right side
    87,472x = 19,391,258,756.25
  5. Step 5: Solve for x
    x = 19,391,258,756.25/87,472
  6. Step 6: Final answer
    x = 221,685.33

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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.