Home / 143,579.88-215,357.51-87,405.41

Finding the Fourth Proportional to 143,579.88, 215,357.51 and 87,405.41

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Solution

The fourth proportional to 143,579.88, 215,357.51 and 87,405.41 is: 131,100.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,579.88 : 215,357.51 = 87,405.41 : x
  2. Step 2: Convert to fraction form
    143,579.88/215,357.51 = 87,405.41/x
  3. Step 3: Cross multiply
    143,579.88x = 215,357.51 × 87,405.41
  4. Step 4: Simplify right side
    143,579.88x = 18,823,409,944.31
  5. Step 5: Solve for x
    x = 18,823,409,944.31/143,579.88
  6. Step 6: Final answer
    x = 131,100.61

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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.