Home / 203,908.53-305,981.28-83,977.55

Finding the Fourth Proportional to 203,908.53, 305,981.28 and 83,977.55

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Solution

The fourth proportional to 203,908.53, 305,981.28 and 83,977.55 is: 126,015.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,908.53 : 305,981.28 = 83,977.55 : x
  2. Step 2: Convert to fraction form
    203,908.53/305,981.28 = 83,977.55/x
  3. Step 3: Cross multiply
    203,908.53x = 305,981.28 × 83,977.55
  4. Step 4: Simplify right side
    203,908.53x = 25,695,558,240.26
  5. Step 5: Solve for x
    x = 25,695,558,240.26/203,908.53
  6. Step 6: Final answer
    x = 126,015.12

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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.