Home / 120,135.25-165,790.09-66,425.27

Finding the Fourth Proportional to 120,135.25, 165,790.09 and 66,425.27

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Solution

The fourth proportional to 120,135.25, 165,790.09 and 66,425.27 is: 91,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,135.25 : 165,790.09 = 66,425.27 : x
  2. Step 2: Convert to fraction form
    120,135.25/165,790.09 = 66,425.27/x
  3. Step 3: Cross multiply
    120,135.25x = 165,790.09 × 66,425.27
  4. Step 4: Simplify right side
    120,135.25x = 11,012,650,745.66
  5. Step 5: Solve for x
    x = 11,012,650,745.66/120,135.25
  6. Step 6: Final answer
    x = 91,668.77

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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.