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Finding the Third Proportional to 91,005,888 and 128,770,542

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Solution

The third proportional to 91,005,888 and 128,770,542 is: 182,206,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,005,888 : 128,770,542 = 128,770,542 : x
  2. Step 2: Convert to fraction form
    91,005,888/128,770,542 = 128,770,542/x
  3. Step 3: Cross multiply
    91,005,888x = 128,770,542 × 128,770,542
  4. Step 4: Simplify right side
    91,005,888x = 16,581,852,486,973,764
  5. Step 5: Solve for x
    x = 16,581,852,486,973,764/91,005,888
  6. Step 6: Final answer
    x = 182,206,369.84

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.