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Finding the Third Proportional to 91,005,969 and 128,770,638

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Solution

The third proportional to 91,005,969 and 128,770,638 is: 182,206,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,005,969 : 128,770,638 = 128,770,638 : x
  2. Step 2: Convert to fraction form
    91,005,969/128,770,638 = 128,770,638/x
  3. Step 3: Cross multiply
    91,005,969x = 128,770,638 × 128,770,638
  4. Step 4: Simplify right side
    91,005,969x = 16,581,877,210,927,044
  5. Step 5: Solve for x
    x = 16,581,877,210,927,044/91,005,969
  6. Step 6: Final answer
    x = 182,206,479.35

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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.