Home / 90,622.05-135,951.30-75,932.70

Finding the Fourth Proportional to 90,622.05, 135,951.30 and 75,932.70

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Solution

The fourth proportional to 90,622.05, 135,951.30 and 75,932.70 is: 113,914.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,622.05 : 135,951.30 = 75,932.70 : x
  2. Step 2: Convert to fraction form
    90,622.05/135,951.30 = 75,932.70/x
  3. Step 3: Cross multiply
    90,622.05x = 135,951.30 × 75,932.70
  4. Step 4: Simplify right side
    90,622.05x = 10,323,149,277.51
  5. Step 5: Solve for x
    x = 10,323,149,277.51/90,622.05
  6. Step 6: Final answer
    x = 113,914.32

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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.