Home / 120,156.82-165,819.25-66,442.88

Finding the Fourth Proportional to 120,156.82, 165,819.25 and 66,442.88

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Solution

The fourth proportional to 120,156.82, 165,819.25 and 66,442.88 is: 91,692.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,156.82 : 165,819.25 = 66,442.88 : x
  2. Step 2: Convert to fraction form
    120,156.82/165,819.25 = 66,442.88/x
  3. Step 3: Cross multiply
    120,156.82x = 165,819.25 × 66,442.88
  4. Step 4: Simplify right side
    120,156.82x = 11,017,509,027.04
  5. Step 5: Solve for x
    x = 11,017,509,027.04/120,156.82
  6. Step 6: Final answer
    x = 91,692.75

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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.