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Finding the Fourth Proportional to 120,254.56, 165,927.70 and 66,529.54

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Solution

The fourth proportional to 120,254.56, 165,927.70 and 66,529.54 is: 91,797.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,254.56 : 165,927.70 = 66,529.54 : x
  2. Step 2: Convert to fraction form
    120,254.56/165,927.70 = 66,529.54/x
  3. Step 3: Cross multiply
    120,254.56x = 165,927.70 × 66,529.54
  4. Step 4: Simplify right side
    120,254.56x = 11,039,093,554.26
  5. Step 5: Solve for x
    x = 11,039,093,554.26/120,254.56
  6. Step 6: Final answer
    x = 91,797.71

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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.