Home / 90,492.32-135,485.22-68,236.04

Finding the Fourth Proportional to 90,492.32, 135,485.22 and 68,236.04

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Solution

The fourth proportional to 90,492.32, 135,485.22 and 68,236.04 is: 102,163.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,492.32 : 135,485.22 = 68,236.04 : x
  2. Step 2: Convert to fraction form
    90,492.32/135,485.22 = 68,236.04/x
  3. Step 3: Cross multiply
    90,492.32x = 135,485.22 × 68,236.04
  4. Step 4: Simplify right side
    90,492.32x = 9,244,974,891.33
  5. Step 5: Solve for x
    x = 9,244,974,891.33/90,492.32
  6. Step 6: Final answer
    x = 102,163.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.