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Finding the Fourth Proportional to 143,435.89, 215,160.86 and 54,672.85

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Solution

The fourth proportional to 143,435.89, 215,160.86 and 54,672.85 is: 82,011.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.89 : 215,160.86 = 54,672.85 : x
  2. Step 2: Convert to fraction form
    143,435.89/215,160.86 = 54,672.85/x
  3. Step 3: Cross multiply
    143,435.89x = 215,160.86 × 54,672.85
  4. Step 4: Simplify right side
    143,435.89x = 11,763,457,424.65
  5. Step 5: Solve for x
    x = 11,763,457,424.65/143,435.89
  6. Step 6: Final answer
    x = 82,011.95

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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.