Home / 149,408.15-206,177.22-81,423.68

Finding the Fourth Proportional to 149,408.15, 206,177.22 and 81,423.68

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Solution

The fourth proportional to 149,408.15, 206,177.22 and 81,423.68 is: 112,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,408.15 : 206,177.22 = 81,423.68 : x
  2. Step 2: Convert to fraction form
    149,408.15/206,177.22 = 81,423.68/x
  3. Step 3: Cross multiply
    149,408.15x = 206,177.22 × 81,423.68
  4. Step 4: Simplify right side
    149,408.15x = 16,787,706,953.68
  5. Step 5: Solve for x
    x = 16,787,706,953.68/149,408.15
  6. Step 6: Final answer
    x = 112,361.39

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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.