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Finding the Fourth Proportional to 120,060.68, 165,679.28 and 66,344.58

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Solution

The fourth proportional to 120,060.68, 165,679.28 and 66,344.58 is: 91,553.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,060.68 : 165,679.28 = 66,344.58 : x
  2. Step 2: Convert to fraction form
    120,060.68/165,679.28 = 66,344.58/x
  3. Step 3: Cross multiply
    120,060.68x = 165,679.28 × 66,344.58
  4. Step 4: Simplify right side
    120,060.68x = 10,991,922,246.30
  5. Step 5: Solve for x
    x = 10,991,922,246.30/120,060.68
  6. Step 6: Final answer
    x = 91,553.06

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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.