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Finding the Fourth Proportional to 149,245.97, 205,963.13 and 81,266.67

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Solution

The fourth proportional to 149,245.97, 205,963.13 and 81,266.67 is: 112,150.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,245.97 : 205,963.13 = 81,266.67 : x
  2. Step 2: Convert to fraction form
    149,245.97/205,963.13 = 81,266.67/x
  3. Step 3: Cross multiply
    149,245.97x = 205,963.13 × 81,266.67
  4. Step 4: Simplify right side
    149,245.97x = 16,737,936,691.56
  5. Step 5: Solve for x
    x = 16,737,936,691.56/149,245.97
  6. Step 6: Final answer
    x = 112,150.01

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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.