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Finding the Fourth Proportional to 143,384.72, 215,072.22 and 54,635.04

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Solution

The fourth proportional to 143,384.72, 215,072.22 and 54,635.04 is: 81,950.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,384.72 : 215,072.22 = 54,635.04 : x
  2. Step 2: Convert to fraction form
    143,384.72/215,072.22 = 54,635.04/x
  3. Step 3: Cross multiply
    143,384.72x = 215,072.22 × 54,635.04
  4. Step 4: Simplify right side
    143,384.72x = 11,750,479,342.59
  5. Step 5: Solve for x
    x = 11,750,479,342.59/143,384.72
  6. Step 6: Final answer
    x = 81,950.71

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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.