Home / 135,709.75-203,357.03-72,538.86

Finding the Fourth Proportional to 135,709.75, 203,357.03 and 72,538.86

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Solution

The fourth proportional to 135,709.75, 203,357.03 and 72,538.86 is: 108,697.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,709.75 : 203,357.03 = 72,538.86 : x
  2. Step 2: Convert to fraction form
    135,709.75/203,357.03 = 72,538.86/x
  3. Step 3: Cross multiply
    135,709.75x = 203,357.03 × 72,538.86
  4. Step 4: Simplify right side
    135,709.75x = 14,751,287,310.53
  5. Step 5: Solve for x
    x = 14,751,287,310.53/135,709.75
  6. Step 6: Final answer
    x = 108,697.33

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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.