Home / 149,403.66-206,173.26-81,422.39

Finding the Fourth Proportional to 149,403.66, 206,173.26 and 81,422.39

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Solution

The fourth proportional to 149,403.66, 206,173.26 and 81,422.39 is: 112,360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,403.66 : 206,173.26 = 81,422.39 : x
  2. Step 2: Convert to fraction form
    149,403.66/206,173.26 = 81,422.39/x
  3. Step 3: Cross multiply
    149,403.66x = 206,173.26 × 81,422.39
  4. Step 4: Simplify right side
    149,403.66x = 16,787,119,583.29
  5. Step 5: Solve for x
    x = 16,787,119,583.29/149,403.66
  6. Step 6: Final answer
    x = 112,360.83

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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.