Home / 215,991.54-324,131.93-89,631.91

Finding the Fourth Proportional to 215,991.54, 324,131.93 and 89,631.91

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Solution

The fourth proportional to 215,991.54, 324,131.93 and 89,631.91 is: 134,507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,991.54 : 324,131.93 = 89,631.91 : x
  2. Step 2: Convert to fraction form
    215,991.54/324,131.93 = 89,631.91/x
  3. Step 3: Cross multiply
    215,991.54x = 324,131.93 × 89,631.91
  4. Step 4: Simplify right side
    215,991.54x = 29,052,562,719.40
  5. Step 5: Solve for x
    x = 29,052,562,719.40/215,991.54
  6. Step 6: Final answer
    x = 134,507.87

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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.