Home / 215,803.14-323,704.71-91,145.22

Finding the Fourth Proportional to 215,803.14, 323,704.71 and 91,145.22

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Solution

The fourth proportional to 215,803.14, 323,704.71 and 91,145.22 is: 136,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,803.14 : 323,704.71 = 91,145.22 : x
  2. Step 2: Convert to fraction form
    215,803.14/323,704.71 = 91,145.22/x
  3. Step 3: Cross multiply
    215,803.14x = 323,704.71 × 91,145.22
  4. Step 4: Simplify right side
    215,803.14x = 29,504,137,007.99
  5. Step 5: Solve for x
    x = 29,504,137,007.99/215,803.14
  6. Step 6: Final answer
    x = 136,717.83

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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.