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Finding the Third Proportional to 78,666 and 169,854

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Solution

The third proportional to 78,666 and 169,854 is: 366,745.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,666 : 169,854 = 169,854 : x
  2. Step 2: Convert to fraction form
    78,666/169,854 = 169,854/x
  3. Step 3: Cross multiply
    78,666x = 169,854 × 169,854
  4. Step 4: Simplify right side
    78,666x = 28,850,381,316
  5. Step 5: Solve for x
    x = 28,850,381,316/78,666
  6. Step 6: Final answer
    x = 366,745.24

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.