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Finding the Fourth Proportional to 149,446.12, 206,130.12 and 88,969.90

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Solution

The fourth proportional to 149,446.12, 206,130.12 and 88,969.90 is: 122,715.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,446.12 : 206,130.12 = 88,969.90 : x
  2. Step 2: Convert to fraction form
    149,446.12/206,130.12 = 88,969.90/x
  3. Step 3: Cross multiply
    149,446.12x = 206,130.12 × 88,969.90
  4. Step 4: Simplify right side
    149,446.12x = 18,339,376,163.39
  5. Step 5: Solve for x
    x = 18,339,376,163.39/149,446.12
  6. Step 6: Final answer
    x = 122,715.64

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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.