Home / 108,198.54-162,156.42-78,313.44

Finding the Fourth Proportional to 108,198.54, 162,156.42 and 78,313.44

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Solution

The fourth proportional to 108,198.54, 162,156.42 and 78,313.44 is: 117,367.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,198.54 : 162,156.42 = 78,313.44 : x
  2. Step 2: Convert to fraction form
    108,198.54/162,156.42 = 78,313.44/x
  3. Step 3: Cross multiply
    108,198.54x = 162,156.42 × 78,313.44
  4. Step 4: Simplify right side
    108,198.54x = 12,699,027,068.28
  5. Step 5: Solve for x
    x = 12,699,027,068.28/108,198.54
  6. Step 6: Final answer
    x = 117,367.82

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1.5x scale

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.