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Finding the Third Proportional to 121,785,615 and 188,864,716.50

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Solution

The third proportional to 121,785,615 and 188,864,716.50 is: 292,890,758.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,785,615 : 188,864,716.50 = 188,864,716.50 : x
  2. Step 2: Convert to fraction form
    121,785,615/188,864,716.50 = 188,864,716.50/x
  3. Step 3: Cross multiply
    121,785,615x = 188,864,716.50 × 188,864,716.50
  4. Step 4: Simplify right side
    121,785,615x = 35,669,881,138,625,372
  5. Step 5: Solve for x
    x = 35,669,881,138,625,372/121,785,615
  6. Step 6: Final answer
    x = 292,890,758.39

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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.