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Finding the Third Proportional to 89,346.38 and 138,920.63

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Solution

The third proportional to 89,346.38 and 138,920.63 is: 216,001.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,346.38 : 138,920.63 = 138,920.63 : x
  2. Step 2: Convert to fraction form
    89,346.38/138,920.63 = 138,920.63/x
  3. Step 3: Cross multiply
    89,346.38x = 138,920.63 × 138,920.63
  4. Step 4: Simplify right side
    89,346.38x = 19,298,940,050.39
  5. Step 5: Solve for x
    x = 19,298,940,050.39/89,346.38
  6. Step 6: Final answer
    x = 216,001.38

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.