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Finding the Third Proportional to 68,699,880 and 148,161,447

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Solution

The third proportional to 68,699,880 and 148,161,447 is: 319,532,062.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,699,880 : 148,161,447 = 148,161,447 : x
  2. Step 2: Convert to fraction form
    68,699,880/148,161,447 = 148,161,447/x
  3. Step 3: Cross multiply
    68,699,880x = 148,161,447 × 148,161,447
  4. Step 4: Simplify right side
    68,699,880x = 21,951,814,377,133,808
  5. Step 5: Solve for x
    x = 21,951,814,377,133,808/68,699,880
  6. Step 6: Final answer
    x = 319,532,062.90

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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.