Home / 82,546.22-123,819.33-78,338.98

Finding the Fourth Proportional to 82,546.22, 123,819.33 and 78,338.98

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Solution

The fourth proportional to 82,546.22, 123,819.33 and 78,338.98 is: 117,508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,546.22 : 123,819.33 = 78,338.98 : x
  2. Step 2: Convert to fraction form
    82,546.22/123,819.33 = 78,338.98/x
  3. Step 3: Cross multiply
    82,546.22x = 123,819.33 × 78,338.98
  4. Step 4: Simplify right side
    82,546.22x = 9,699,880,465.03
  5. Step 5: Solve for x
    x = 9,699,880,465.03/82,546.22
  6. Step 6: Final answer
    x = 117,508.47

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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.