Home / 143,858.24-215,234.40-87,688.16

Finding the Fourth Proportional to 143,858.24, 215,234.40 and 87,688.16

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Solution

The fourth proportional to 143,858.24, 215,234.40 and 87,688.16 is: 131,195.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,858.24 : 215,234.40 = 87,688.16 : x
  2. Step 2: Convert to fraction form
    143,858.24/215,234.40 = 87,688.16/x
  3. Step 3: Cross multiply
    143,858.24x = 215,234.40 × 87,688.16
  4. Step 4: Simplify right side
    143,858.24x = 18,873,508,504.70
  5. Step 5: Solve for x
    x = 18,873,508,504.70/143,858.24
  6. Step 6: Final answer
    x = 131,195.19

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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.