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Finding the Fourth Proportional to 120,260.56, 165,958.80 and 66,544.56

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Solution

The fourth proportional to 120,260.56, 165,958.80 and 66,544.56 is: 91,831.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,260.56 : 165,958.80 = 66,544.56 : x
  2. Step 2: Convert to fraction form
    120,260.56/165,958.80 = 66,544.56/x
  3. Step 3: Cross multiply
    120,260.56x = 165,958.80 × 66,544.56
  4. Step 4: Simplify right side
    120,260.56x = 11,043,655,324.13
  5. Step 5: Solve for x
    x = 11,043,655,324.13/120,260.56
  6. Step 6: Final answer
    x = 91,831.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.