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Finding the Fourth Proportional to 120,221.58, 165,918.11 and 69,236.22

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Solution

The fourth proportional to 120,221.58, 165,918.11 and 69,236.22 is: 95,553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,221.58 : 165,918.11 = 69,236.22 : x
  2. Step 2: Convert to fraction form
    120,221.58/165,918.11 = 69,236.22/x
  3. Step 3: Cross multiply
    120,221.58x = 165,918.11 × 69,236.22
  4. Step 4: Simplify right side
    120,221.58x = 11,487,542,419.76
  5. Step 5: Solve for x
    x = 11,487,542,419.76/120,221.58
  6. Step 6: Final answer
    x = 95,553.08

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1.5x scale

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.