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Finding the Third Proportional to 89,538.75 and 139,758.75

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Solution

The third proportional to 89,538.75 and 139,758.75 is: 218,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,538.75 : 139,758.75 = 139,758.75 : x
  2. Step 2: Convert to fraction form
    89,538.75/139,758.75 = 139,758.75/x
  3. Step 3: Cross multiply
    89,538.75x = 139,758.75 × 139,758.75
  4. Step 4: Simplify right side
    89,538.75x = 19,532,508,201.56
  5. Step 5: Solve for x
    x = 19,532,508,201.56/89,538.75
  6. Step 6: Final answer
    x = 218,145.87

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.