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Finding the Third Proportional to 77,387 and 169,355

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Solution

The third proportional to 77,387 and 169,355 is: 370,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,387 : 169,355 = 169,355 : x
  2. Step 2: Convert to fraction form
    77,387/169,355 = 169,355/x
  3. Step 3: Cross multiply
    77,387x = 169,355 × 169,355
  4. Step 4: Simplify right side
    77,387x = 28,681,116,025
  5. Step 5: Solve for x
    x = 28,681,116,025/77,387
  6. Step 6: Final answer
    x = 370,619.30

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.