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Finding the Third Proportional to 81,118,458 and 123,720,832

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Solution

The third proportional to 81,118,458 and 123,720,832 is: 188,697,426.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,118,458 : 123,720,832 = 123,720,832 : x
  2. Step 2: Convert to fraction form
    81,118,458/123,720,832 = 123,720,832/x
  3. Step 3: Cross multiply
    81,118,458x = 123,720,832 × 123,720,832
  4. Step 4: Simplify right side
    81,118,458x = 15,306,844,270,772,224
  5. Step 5: Solve for x
    x = 15,306,844,270,772,224/81,118,458
  6. Step 6: Final answer
    x = 188,697,426.56

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.