Home / 143,835.40-215,672.10-55,091.80

Finding the Fourth Proportional to 143,835.40, 215,672.10 and 55,091.80

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Solution

The fourth proportional to 143,835.40, 215,672.10 and 55,091.80 is: 82,606.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,835.40 : 215,672.10 = 55,091.80 : x
  2. Step 2: Convert to fraction form
    143,835.40/215,672.10 = 55,091.80/x
  3. Step 3: Cross multiply
    143,835.40x = 215,672.10 × 55,091.80
  4. Step 4: Simplify right side
    143,835.40x = 11,881,764,198.78
  5. Step 5: Solve for x
    x = 11,881,764,198.78/143,835.40
  6. Step 6: Final answer
    x = 82,606.68

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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.