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Finding the Third Proportional to 65,427.75 and 128,121.75

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Solution

The third proportional to 65,427.75 and 128,121.75 is: 250,890.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,427.75 : 128,121.75 = 128,121.75 : x
  2. Step 2: Convert to fraction form
    65,427.75/128,121.75 = 128,121.75/x
  3. Step 3: Cross multiply
    65,427.75x = 128,121.75 × 128,121.75
  4. Step 4: Simplify right side
    65,427.75x = 16,415,182,823.06
  5. Step 5: Solve for x
    x = 16,415,182,823.06/65,427.75
  6. Step 6: Final answer
    x = 250,890.22

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Why These Related Problems?

These problems maintain the same ratio (1.96) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.