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Finding the Third Proportional to 64,804 and 139,724

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Solution

The third proportional to 64,804 and 139,724 is: 301,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,804 : 139,724 = 139,724 : x
  2. Step 2: Convert to fraction form
    64,804/139,724 = 139,724/x
  3. Step 3: Cross multiply
    64,804x = 139,724 × 139,724
  4. Step 4: Simplify right side
    64,804x = 19,522,796,176
  5. Step 5: Solve for x
    x = 19,522,796,176/64,804
  6. Step 6: Final answer
    x = 301,259.12

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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.