Home / 149,715.88-206,611.03-81,735.71

Finding the Fourth Proportional to 149,715.88, 206,611.03 and 81,735.71

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Solution

The fourth proportional to 149,715.88, 206,611.03 and 81,735.71 is: 112,796.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,715.88 : 206,611.03 = 81,735.71 : x
  2. Step 2: Convert to fraction form
    149,715.88/206,611.03 = 81,735.71/x
  3. Step 3: Cross multiply
    149,715.88x = 206,611.03 × 81,735.71
  4. Step 4: Simplify right side
    149,715.88x = 16,887,500,475.90
  5. Step 5: Solve for x
    x = 16,887,500,475.90/149,715.88
  6. Step 6: Final answer
    x = 112,796.99

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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.