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Finding the Third Proportional to 87,437.81 and 139,039.03

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Solution

The third proportional to 87,437.81 and 139,039.03 is: 221,092.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,437.81 : 139,039.03 = 139,039.03 : x
  2. Step 2: Convert to fraction form
    87,437.81/139,039.03 = 139,039.03/x
  3. Step 3: Cross multiply
    87,437.81x = 139,039.03 × 139,039.03
  4. Step 4: Simplify right side
    87,437.81x = 19,331,852,210.94
  5. Step 5: Solve for x
    x = 19,331,852,210.94/87,437.81
  6. Step 6: Final answer
    x = 221,092.59

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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.