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Finding the Third Proportional to 102,240 and 155,200

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Solution

The third proportional to 102,240 and 155,200 is: 235,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,240 : 155,200 = 155,200 : x
  2. Step 2: Convert to fraction form
    102,240/155,200 = 155,200/x
  3. Step 3: Cross multiply
    102,240x = 155,200 × 155,200
  4. Step 4: Simplify right side
    102,240x = 24,087,040,000
  5. Step 5: Solve for x
    x = 24,087,040,000/102,240
  6. Step 6: Final answer
    x = 235,593.11

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.