Home / 204,989.16-307,578.60-78,587.16

Finding the Fourth Proportional to 204,989.16, 307,578.60 and 78,587.16

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Solution

The fourth proportional to 204,989.16, 307,578.60 and 78,587.16 is: 117,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,989.16 : 307,578.60 = 78,587.16 : x
  2. Step 2: Convert to fraction form
    204,989.16/307,578.60 = 78,587.16/x
  3. Step 3: Cross multiply
    204,989.16x = 307,578.60 × 78,587.16
  4. Step 4: Simplify right side
    204,989.16x = 24,171,728,650.78
  5. Step 5: Solve for x
    x = 24,171,728,650.78/204,989.16
  6. Step 6: Final answer
    x = 117,917.11

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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.