Home / 138,501,481.20-207,478,506.60-121,481,372.40

Finding the Fourth Proportional to 138,501,481.20, 207,478,506.60 and 121,481,372.40

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Solution

The fourth proportional to 138,501,481.20, 207,478,506.60 and 121,481,372.40 is: 181,981,979.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,501,481.20 : 207,478,506.60 = 121,481,372.40 : x
  2. Step 2: Convert to fraction form
    138,501,481.20/207,478,506.60 = 121,481,372.40/x
  3. Step 3: Cross multiply
    138,501,481.20x = 207,478,506.60 × 121,481,372.40
  4. Step 4: Simplify right side
    138,501,481.20x = 25,204,773,725,270,460
  5. Step 5: Solve for x
    x = 25,204,773,725,270,460/138,501,481.20
  6. Step 6: Final answer
    x = 181,981,979.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.