Home / 90,495.32-135,489.70-68,239.04

Finding the Fourth Proportional to 90,495.32, 135,489.70 and 68,239.04

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Solution

The fourth proportional to 90,495.32, 135,489.70 and 68,239.04 is: 102,167.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,495.32 : 135,489.70 = 68,239.04 : x
  2. Step 2: Convert to fraction form
    90,495.32/135,489.70 = 68,239.04/x
  3. Step 3: Cross multiply
    90,495.32x = 135,489.70 × 68,239.04
  4. Step 4: Simplify right side
    90,495.32x = 9,245,687,057.89
  5. Step 5: Solve for x
    x = 9,245,687,057.89/90,495.32
  6. Step 6: Final answer
    x = 102,167.57

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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.