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Finding the Third Proportional to 66,606.75 and 139,369.50

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Solution

The third proportional to 66,606.75 and 139,369.50 is: 291,619.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,606.75 : 139,369.50 = 139,369.50 : x
  2. Step 2: Convert to fraction form
    66,606.75/139,369.50 = 139,369.50/x
  3. Step 3: Cross multiply
    66,606.75x = 139,369.50 × 139,369.50
  4. Step 4: Simplify right side
    66,606.75x = 19,423,857,530.25
  5. Step 5: Solve for x
    x = 19,423,857,530.25/66,606.75
  6. Step 6: Final answer
    x = 291,619.96

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.