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Finding the Fourth Proportional to 138,366.96, 207,634.44 and 55,254

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Solution

The fourth proportional to 138,366.96, 207,634.44 and 55,254 is: 82,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,366.96 : 207,634.44 = 55,254 : x
  2. Step 2: Convert to fraction form
    138,366.96/207,634.44 = 55,254/x
  3. Step 3: Cross multiply
    138,366.96x = 207,634.44 × 55,254
  4. Step 4: Simplify right side
    138,366.96x = 11,472,633,347.76
  5. Step 5: Solve for x
    x = 11,472,633,347.76/138,366.96
  6. Step 6: Final answer
    x = 82,914.54

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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.