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Finding the Third Proportional to 64,704 and 139,620

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Solution

The third proportional to 64,704 and 139,620 is: 301,275.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,704 : 139,620 = 139,620 : x
  2. Step 2: Convert to fraction form
    64,704/139,620 = 139,620/x
  3. Step 3: Cross multiply
    64,704x = 139,620 × 139,620
  4. Step 4: Simplify right side
    64,704x = 19,493,744,400
  5. Step 5: Solve for x
    x = 19,493,744,400/64,704
  6. Step 6: Final answer
    x = 301,275.72

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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.