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Finding the Third Proportional to 128,101 and 275,154

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Solution

The third proportional to 128,101 and 275,154 is: 591,015.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,101 : 275,154 = 275,154 : x
  2. Step 2: Convert to fraction form
    128,101/275,154 = 275,154/x
  3. Step 3: Cross multiply
    128,101x = 275,154 × 275,154
  4. Step 4: Simplify right side
    128,101x = 75,709,723,716
  5. Step 5: Solve for x
    x = 75,709,723,716/128,101
  6. Step 6: Final answer
    x = 591,015.87

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.