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Finding the Third Proportional to 79,171,440 and 122,588,160

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Solution

The third proportional to 79,171,440 and 122,588,160 is: 189,814,116.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,171,440 : 122,588,160 = 122,588,160 : x
  2. Step 2: Convert to fraction form
    79,171,440/122,588,160 = 122,588,160/x
  3. Step 3: Cross multiply
    79,171,440x = 122,588,160 × 122,588,160
  4. Step 4: Simplify right side
    79,171,440x = 15,027,856,972,185,600
  5. Step 5: Solve for x
    x = 15,027,856,972,185,600/79,171,440
  6. Step 6: Final answer
    x = 189,814,116.96

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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.