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Finding the Third Proportional to 81,817,155 and 181,795,521

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Solution

The third proportional to 81,817,155 and 181,795,521 is: 403,944,765.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,817,155 : 181,795,521 = 181,795,521 : x
  2. Step 2: Convert to fraction form
    81,817,155/181,795,521 = 181,795,521/x
  3. Step 3: Cross multiply
    81,817,155x = 181,795,521 × 181,795,521
  4. Step 4: Simplify right side
    81,817,155x = 33,049,611,455,661,440
  5. Step 5: Solve for x
    x = 33,049,611,455,661,440/81,817,155
  6. Step 6: Final answer
    x = 403,944,765.08

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.