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Finding the Third Proportional to 121,785,621 and 188,864,725.50

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Solution

The third proportional to 121,785,621 and 188,864,725.50 is: 292,890,771.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,785,621 : 188,864,725.50 = 188,864,725.50 : x
  2. Step 2: Convert to fraction form
    121,785,621/188,864,725.50 = 188,864,725.50/x
  3. Step 3: Cross multiply
    121,785,621x = 188,864,725.50 × 188,864,725.50
  4. Step 4: Simplify right side
    121,785,621x = 35,669,884,538,190,352
  5. Step 5: Solve for x
    x = 35,669,884,538,190,352/121,785,621
  6. Step 6: Final answer
    x = 292,890,771.88

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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.