Home / 207,720.52-311,464.06-86,103.88

Finding the Fourth Proportional to 207,720.52, 311,464.06 and 86,103.88

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Solution

The fourth proportional to 207,720.52, 311,464.06 and 86,103.88 is: 129,107.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,720.52 : 311,464.06 = 86,103.88 : x
  2. Step 2: Convert to fraction form
    207,720.52/311,464.06 = 86,103.88/x
  3. Step 3: Cross multiply
    207,720.52x = 311,464.06 × 86,103.88
  4. Step 4: Simplify right side
    207,720.52x = 26,818,264,046.55
  5. Step 5: Solve for x
    x = 26,818,264,046.55/207,720.52
  6. Step 6: Final answer
    x = 129,107.44

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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.