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Finding the Third Proportional to 69,942 and 105,498

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Solution

The third proportional to 69,942 and 105,498 is: 159,129.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,942 : 105,498 = 105,498 : x
  2. Step 2: Convert to fraction form
    69,942/105,498 = 105,498/x
  3. Step 3: Cross multiply
    69,942x = 105,498 × 105,498
  4. Step 4: Simplify right side
    69,942x = 11,129,828,004
  5. Step 5: Solve for x
    x = 11,129,828,004/69,942
  6. Step 6: Final answer
    x = 159,129.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.