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Finding the Third Proportional to 90,109,334 and 139,591,137

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Solution

The third proportional to 90,109,334 and 139,591,137 is: 216,244,917.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,109,334 : 139,591,137 = 139,591,137 : x
  2. Step 2: Convert to fraction form
    90,109,334/139,591,137 = 139,591,137/x
  3. Step 3: Cross multiply
    90,109,334x = 139,591,137 × 139,591,137
  4. Step 4: Simplify right side
    90,109,334x = 19,485,685,528,952,768
  5. Step 5: Solve for x
    x = 19,485,685,528,952,768/90,109,334
  6. Step 6: Final answer
    x = 216,244,917.86

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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.