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Finding the Third Proportional to 68,163.50 and 139,632.50

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Solution

The third proportional to 68,163.50 and 139,632.50 is: 286,036.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,163.50 : 139,632.50 = 139,632.50 : x
  2. Step 2: Convert to fraction form
    68,163.50/139,632.50 = 139,632.50/x
  3. Step 3: Cross multiply
    68,163.50x = 139,632.50 × 139,632.50
  4. Step 4: Simplify right side
    68,163.50x = 19,497,235,056.25
  5. Step 5: Solve for x
    x = 19,497,235,056.25/68,163.50
  6. Step 6: Final answer
    x = 286,036.30

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.