Home / 120,132.05-165,773.99-66,416.56

Finding the Fourth Proportional to 120,132.05, 165,773.99 and 66,416.56

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Solution

The fourth proportional to 120,132.05, 165,773.99 and 66,416.56 is: 91,650.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.05 : 165,773.99 = 66,416.56 : x
  2. Step 2: Convert to fraction form
    120,132.05/165,773.99 = 66,416.56/x
  3. Step 3: Cross multiply
    120,132.05x = 165,773.99 × 66,416.56
  4. Step 4: Simplify right side
    120,132.05x = 11,010,137,904.88
  5. Step 5: Solve for x
    x = 11,010,137,904.88/120,132.05
  6. Step 6: Final answer
    x = 91,650.30

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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.