Home / 215,731.63-323,644.16-82,611.90

Finding the Fourth Proportional to 215,731.63, 323,644.16 and 82,611.90

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Solution

The fourth proportional to 215,731.63, 323,644.16 and 82,611.90 is: 123,935.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,731.63 : 323,644.16 = 82,611.90 : x
  2. Step 2: Convert to fraction form
    215,731.63/323,644.16 = 82,611.90/x
  3. Step 3: Cross multiply
    215,731.63x = 323,644.16 × 82,611.90
  4. Step 4: Simplify right side
    215,731.63x = 26,736,857,664.57
  5. Step 5: Solve for x
    x = 26,736,857,664.57/215,731.63
  6. Step 6: Final answer
    x = 123,935.73

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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.