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Finding the Fourth Proportional to 143,869.86, 215,804.79 and 50,353.74

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Solution

The fourth proportional to 143,869.86, 215,804.79 and 50,353.74 is: 75,530.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.86 : 215,804.79 = 50,353.74 : x
  2. Step 2: Convert to fraction form
    143,869.86/215,804.79 = 50,353.74/x
  3. Step 3: Cross multiply
    143,869.86x = 215,804.79 × 50,353.74
  4. Step 4: Simplify right side
    143,869.86x = 10,866,578,286.41
  5. Step 5: Solve for x
    x = 10,866,578,286.41/143,869.86
  6. Step 6: Final answer
    x = 75,530.61

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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.