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Finding the Third Proportional to 68,920.88 and 139,087.13

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Solution

The third proportional to 68,920.88 and 139,087.13 is: 280,687.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,920.88 : 139,087.13 = 139,087.13 : x
  2. Step 2: Convert to fraction form
    68,920.88/139,087.13 = 139,087.13/x
  3. Step 3: Cross multiply
    68,920.88x = 139,087.13 × 139,087.13
  4. Step 4: Simplify right side
    68,920.88x = 19,345,228,340.77
  5. Step 5: Solve for x
    x = 19,345,228,340.77/68,920.88
  6. Step 6: Final answer
    x = 280,687.50

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Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.