Home / 143,581.56-215,765.82-135,429.48

Finding the Fourth Proportional to 143,581.56, 215,765.82 and 135,429.48

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Solution

The fourth proportional to 143,581.56, 215,765.82 and 135,429.48 is: 203,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,581.56 : 215,765.82 = 135,429.48 : x
  2. Step 2: Convert to fraction form
    143,581.56/215,765.82 = 135,429.48/x
  3. Step 3: Cross multiply
    143,581.56x = 215,765.82 × 135,429.48
  4. Step 4: Simplify right side
    143,581.56x = 29,221,052,804.37
  5. Step 5: Solve for x
    x = 29,221,052,804.37/143,581.56
  6. Step 6: Final answer
    x = 203,515.36

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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.