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Finding the Third Proportional to 89,454.38 and 138,332.81

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Solution

The third proportional to 89,454.38 and 138,332.81 is: 213,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,454.38 : 138,332.81 = 138,332.81 : x
  2. Step 2: Convert to fraction form
    89,454.38/138,332.81 = 138,332.81/x
  3. Step 3: Cross multiply
    89,454.38x = 138,332.81 × 138,332.81
  4. Step 4: Simplify right side
    89,454.38x = 19,135,967,014.16
  5. Step 5: Solve for x
    x = 19,135,967,014.16/89,454.38
  6. Step 6: Final answer
    x = 213,918.74

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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.