Home / 215,631.96-323,090.34-131,136.54

Finding the Fourth Proportional to 215,631.96, 323,090.34 and 131,136.54

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Solution

The fourth proportional to 215,631.96, 323,090.34 and 131,136.54 is: 196,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,631.96 : 323,090.34 = 131,136.54 : x
  2. Step 2: Convert to fraction form
    215,631.96/323,090.34 = 131,136.54/x
  3. Step 3: Cross multiply
    215,631.96x = 323,090.34 × 131,136.54
  4. Step 4: Simplify right side
    215,631.96x = 42,368,949,295.02
  5. Step 5: Solve for x
    x = 42,368,949,295.02/215,631.96
  6. Step 6: Final answer
    x = 196,487.34

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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.