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Finding the Third Proportional to 66,809,794.50 and 139,728,239.25

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Solution

The third proportional to 66,809,794.50 and 139,728,239.25 is: 292,232,313.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809,794.50 : 139,728,239.25 = 139,728,239.25 : x
  2. Step 2: Convert to fraction form
    66,809,794.50/139,728,239.25 = 139,728,239.25/x
  3. Step 3: Cross multiply
    66,809,794.50x = 139,728,239.25 × 139,728,239.25
  4. Step 4: Simplify right side
    66,809,794.50x = 19,523,980,843,905,240
  5. Step 5: Solve for x
    x = 19,523,980,843,905,240/66,809,794.50
  6. Step 6: Final answer
    x = 292,232,313.99

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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.