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Finding the Third Proportional to 78,889 and 169,807

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Solution

The third proportional to 78,889 and 169,807 is: 365,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,889 : 169,807 = 169,807 : x
  2. Step 2: Convert to fraction form
    78,889/169,807 = 169,807/x
  3. Step 3: Cross multiply
    78,889x = 169,807 × 169,807
  4. Step 4: Simplify right side
    78,889x = 28,834,417,249
  5. Step 5: Solve for x
    x = 28,834,417,249/78,889
  6. Step 6: Final answer
    x = 365,506.18

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.