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Finding the Fourth Proportional to 143,564.95, 215,367.12 and 48,769.68

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Solution

The fourth proportional to 143,564.95, 215,367.12 and 48,769.68 is: 73,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,564.95 : 215,367.12 = 48,769.68 : x
  2. Step 2: Convert to fraction form
    143,564.95/215,367.12 = 48,769.68/x
  3. Step 3: Cross multiply
    143,564.95x = 215,367.12 × 48,769.68
  4. Step 4: Simplify right side
    143,564.95x = 10,503,385,524.92
  5. Step 5: Solve for x
    x = 10,503,385,524.92/143,564.95
  6. Step 6: Final answer
    x = 73,161.21

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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.