Home / 149,408.17-206,178.03-81,423.76

Finding the Fourth Proportional to 149,408.17, 206,178.03 and 81,423.76

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Solution

The fourth proportional to 149,408.17, 206,178.03 and 81,423.76 is: 112,361.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,408.17 : 206,178.03 = 81,423.76 : x
  2. Step 2: Convert to fraction form
    149,408.17/206,178.03 = 81,423.76/x
  3. Step 3: Cross multiply
    149,408.17x = 206,178.03 × 81,423.76
  4. Step 4: Simplify right side
    149,408.17x = 16,787,790,431.99
  5. Step 5: Solve for x
    x = 16,787,790,431.99/149,408.17
  6. Step 6: Final answer
    x = 112,361.93

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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.