Home / 204,829.76-307,286.16-86,500.64

Finding the Fourth Proportional to 204,829.76, 307,286.16 and 86,500.64

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Solution

The fourth proportional to 204,829.76, 307,286.16 and 86,500.64 is: 129,768.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,829.76 : 307,286.16 = 86,500.64 : x
  2. Step 2: Convert to fraction form
    204,829.76/307,286.16 = 86,500.64/x
  3. Step 3: Cross multiply
    204,829.76x = 307,286.16 × 86,500.64
  4. Step 4: Simplify right side
    204,829.76x = 26,580,449,503.14
  5. Step 5: Solve for x
    x = 26,580,449,503.14/204,829.76
  6. Step 6: Final answer
    x = 129,768.49

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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.