Home / 97,846.20-146,769.30-78,163.20

Finding the Fourth Proportional to 97,846.20, 146,769.30 and 78,163.20

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Solution

The fourth proportional to 97,846.20, 146,769.30 and 78,163.20 is: 117,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,846.20 : 146,769.30 = 78,163.20 : x
  2. Step 2: Convert to fraction form
    97,846.20/146,769.30 = 78,163.20/x
  3. Step 3: Cross multiply
    97,846.20x = 146,769.30 × 78,163.20
  4. Step 4: Simplify right side
    97,846.20x = 11,471,958,149.76
  5. Step 5: Solve for x
    x = 11,471,958,149.76/97,846.20
  6. Step 6: Final answer
    x = 117,244.80

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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.