Home / 143,739.72-215,648.46-81,453.96

Finding the Fourth Proportional to 143,739.72, 215,648.46 and 81,453.96

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Solution

The fourth proportional to 143,739.72, 215,648.46 and 81,453.96 is: 122,202.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,739.72 : 215,648.46 = 81,453.96 : x
  2. Step 2: Convert to fraction form
    143,739.72/215,648.46 = 81,453.96/x
  3. Step 3: Cross multiply
    143,739.72x = 215,648.46 × 81,453.96
  4. Step 4: Simplify right side
    143,739.72x = 17,565,421,034.90
  5. Step 5: Solve for x
    x = 17,565,421,034.90/143,739.72
  6. Step 6: Final answer
    x = 122,202.97

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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.