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Finding the Fourth Proportional to 143,321.79, 215,069.09 and 49,893.15

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Solution

The fourth proportional to 143,321.79, 215,069.09 and 49,893.15 is: 74,869.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,321.79 : 215,069.09 = 49,893.15 : x
  2. Step 2: Convert to fraction form
    143,321.79/215,069.09 = 49,893.15/x
  3. Step 3: Cross multiply
    143,321.79x = 215,069.09 × 49,893.15
  4. Step 4: Simplify right side
    143,321.79x = 10,730,474,367.73
  5. Step 5: Solve for x
    x = 10,730,474,367.73/143,321.79
  6. Step 6: Final answer
    x = 74,869.80

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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.