Home / 120,127.82-165,768.26-66,405.58

Finding the Fourth Proportional to 120,127.82, 165,768.26 and 66,405.58

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Solution

The fourth proportional to 120,127.82, 165,768.26 and 66,405.58 is: 91,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.82 : 165,768.26 = 66,405.58 : x
  2. Step 2: Convert to fraction form
    120,127.82/165,768.26 = 66,405.58/x
  3. Step 3: Cross multiply
    120,127.82x = 165,768.26 × 66,405.58
  4. Step 4: Simplify right side
    120,127.82x = 11,007,936,704.44
  5. Step 5: Solve for x
    x = 11,007,936,704.44/120,127.82
  6. Step 6: Final answer
    x = 91,635.20

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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.