Home / 170,990.11-256,489.52-81,011.73

Finding the Fourth Proportional to 170,990.11, 256,489.52 and 81,011.73

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Solution

The fourth proportional to 170,990.11, 256,489.52 and 81,011.73 is: 121,519.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,990.11 : 256,489.52 = 81,011.73 : x
  2. Step 2: Convert to fraction form
    170,990.11/256,489.52 = 81,011.73/x
  3. Step 3: Cross multiply
    170,990.11x = 256,489.52 × 81,011.73
  4. Step 4: Simplify right side
    170,990.11x = 20,778,659,742.07
  5. Step 5: Solve for x
    x = 20,778,659,742.07/170,990.11
  6. Step 6: Final answer
    x = 121,519.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.