Home / 120,404.96-166,151.52-66,686.78

Finding the Fourth Proportional to 120,404.96, 166,151.52 and 66,686.78

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Solution

The fourth proportional to 120,404.96, 166,151.52 and 66,686.78 is: 92,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,404.96 : 166,151.52 = 66,686.78 : x
  2. Step 2: Convert to fraction form
    120,404.96/166,151.52 = 66,686.78/x
  3. Step 3: Cross multiply
    120,404.96x = 166,151.52 × 66,686.78
  4. Step 4: Simplify right side
    120,404.96x = 11,080,109,860.91
  5. Step 5: Solve for x
    x = 11,080,109,860.91/120,404.96
  6. Step 6: Final answer
    x = 92,023.70

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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.