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Finding the Third Proportional to 79,171,390 and 122,588,063

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Solution

The third proportional to 79,171,390 and 122,588,063 is: 189,813,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171,390 : 122,588,063 = 122,588,063 : x
  2. Step 2: Convert to fraction form
    79,171,390/122,588,063 = 122,588,063/x
  3. Step 3: Cross multiply
    79,171,390x = 122,588,063 × 122,588,063
  4. Step 4: Simplify right side
    79,171,390x = 15,027,833,190,091,968
  5. Step 5: Solve for x
    x = 15,027,833,190,091,968/79,171,390
  6. Step 6: Final answer
    x = 189,813,936.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.