Home / 143,081.15-214,478.35-71,786.57

Finding the Fourth Proportional to 143,081.15, 214,478.35 and 71,786.57

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Solution

The fourth proportional to 143,081.15, 214,478.35 and 71,786.57 is: 107,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,081.15 : 214,478.35 = 71,786.57 : x
  2. Step 2: Convert to fraction form
    143,081.15/214,478.35 = 71,786.57/x
  3. Step 3: Cross multiply
    143,081.15x = 214,478.35 × 71,786.57
  4. Step 4: Simplify right side
    143,081.15x = 15,396,663,833.90
  5. Step 5: Solve for x
    x = 15,396,663,833.90/143,081.15
  6. Step 6: Final answer
    x = 107,607.92

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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.