Home / 203,499.09-305,207.03-77,095.76

Finding the Fourth Proportional to 203,499.09, 305,207.03 and 77,095.76

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Solution

The fourth proportional to 203,499.09, 305,207.03 and 77,095.76 is: 115,627.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,499.09 : 305,207.03 = 77,095.76 : x
  2. Step 2: Convert to fraction form
    203,499.09/305,207.03 = 77,095.76/x
  3. Step 3: Cross multiply
    203,499.09x = 305,207.03 × 77,095.76
  4. Step 4: Simplify right side
    203,499.09x = 23,530,166,023.68
  5. Step 5: Solve for x
    x = 23,530,166,023.68/203,499.09
  6. Step 6: Final answer
    x = 115,627.87

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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.