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Finding the Third Proportional to 66,809,881.50 and 139,728,357

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Solution

The third proportional to 66,809,881.50 and 139,728,357 is: 292,232,425.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,809,881.50 : 139,728,357 = 139,728,357 : x
  2. Step 2: Convert to fraction form
    66,809,881.50/139,728,357 = 139,728,357/x
  3. Step 3: Cross multiply
    66,809,881.50x = 139,728,357 × 139,728,357
  4. Step 4: Simplify right side
    66,809,881.50x = 19,524,013,749,919,448
  5. Step 5: Solve for x
    x = 19,524,013,749,919,448/66,809,881.50
  6. Step 6: Final answer
    x = 292,232,425.98

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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.