Home / 149,408.03-206,177.86-81,423.63

Finding the Fourth Proportional to 149,408.03, 206,177.86 and 81,423.63

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Solution

The fourth proportional to 149,408.03, 206,177.86 and 81,423.63 is: 112,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,408.03 : 206,177.86 = 81,423.63 : x
  2. Step 2: Convert to fraction form
    149,408.03/206,177.86 = 81,423.63/x
  3. Step 3: Cross multiply
    149,408.03x = 206,177.86 × 81,423.63
  4. Step 4: Simplify right side
    149,408.03x = 16,787,749,786.83
  5. Step 5: Solve for x
    x = 16,787,749,786.83/149,408.03
  6. Step 6: Final answer
    x = 112,361.76

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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.