Home / 120,163.83-165,819.42-66,445.29

Finding the Fourth Proportional to 120,163.83, 165,819.42 and 66,445.29

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Solution

The fourth proportional to 120,163.83, 165,819.42 and 66,445.29 is: 91,690.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,163.83 : 165,819.42 = 66,445.29 : x
  2. Step 2: Convert to fraction form
    120,163.83/165,819.42 = 66,445.29/x
  3. Step 3: Cross multiply
    120,163.83x = 165,819.42 × 66,445.29
  4. Step 4: Simplify right side
    120,163.83x = 11,017,919,449.53
  5. Step 5: Solve for x
    x = 11,017,919,449.53/120,163.83
  6. Step 6: Final answer
    x = 91,690.81

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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.