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Finding the Fourth Proportional to 138,062.09, 207,062.15 and 53,793.33

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Solution

The fourth proportional to 138,062.09, 207,062.15 and 53,793.33 is: 80,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,062.09 : 207,062.15 = 53,793.33 : x
  2. Step 2: Convert to fraction form
    138,062.09/207,062.15 = 53,793.33/x
  3. Step 3: Cross multiply
    138,062.09x = 207,062.15 × 53,793.33
  4. Step 4: Simplify right side
    138,062.09x = 11,138,562,296.49
  5. Step 5: Solve for x
    x = 11,138,562,296.49/138,062.09
  6. Step 6: Final answer
    x = 80,677.92

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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.