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Finding the Third Proportional to 69,391 and 148,620

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Solution

The third proportional to 69,391 and 148,620 is: 318,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,391 : 148,620 = 148,620 : x
  2. Step 2: Convert to fraction form
    69,391/148,620 = 148,620/x
  3. Step 3: Cross multiply
    69,391x = 148,620 × 148,620
  4. Step 4: Simplify right side
    69,391x = 22,087,904,400
  5. Step 5: Solve for x
    x = 22,087,904,400/69,391
  6. Step 6: Final answer
    x = 318,310.80

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.