Home / 120,145.62-165,793.59-66,427.41

Finding the Fourth Proportional to 120,145.62, 165,793.59 and 66,427.41

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Solution

The fourth proportional to 120,145.62, 165,793.59 and 66,427.41 is: 91,665.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,145.62 : 165,793.59 = 66,427.41 : x
  2. Step 2: Convert to fraction form
    120,145.62/165,793.59 = 66,427.41/x
  3. Step 3: Cross multiply
    120,145.62x = 165,793.59 × 66,427.41
  4. Step 4: Simplify right side
    120,145.62x = 11,013,238,778.30
  5. Step 5: Solve for x
    x = 11,013,238,778.30/120,145.62
  6. Step 6: Final answer
    x = 91,665.75

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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.