Home / 120,149.62-165,799.38-66,430.42

Finding the Fourth Proportional to 120,149.62, 165,799.38 and 66,430.42

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Solution

The fourth proportional to 120,149.62, 165,799.38 and 66,430.42 is: 91,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,149.62 : 165,799.38 = 66,430.42 : x
  2. Step 2: Convert to fraction form
    120,149.62/165,799.38 = 66,430.42/x
  3. Step 3: Cross multiply
    120,149.62x = 165,799.38 × 66,430.42
  4. Step 4: Simplify right side
    120,149.62x = 11,014,122,449.14
  5. Step 5: Solve for x
    x = 11,014,122,449.14/120,149.62
  6. Step 6: Final answer
    x = 91,670.06

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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.