Home / 281,372.08-422,099.72-81,666.60

Finding the Fourth Proportional to 281,372.08, 422,099.72 and 81,666.60

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Solution

The fourth proportional to 281,372.08, 422,099.72 and 81,666.60 is: 122,511.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,372.08 : 422,099.72 = 81,666.60 : x
  2. Step 2: Convert to fraction form
    281,372.08/422,099.72 = 81,666.60/x
  3. Step 3: Cross multiply
    281,372.08x = 422,099.72 × 81,666.60
  4. Step 4: Simplify right side
    281,372.08x = 34,471,448,993.35
  5. Step 5: Solve for x
    x = 34,471,448,993.35/281,372.08
  6. Step 6: Final answer
    x = 122,511.97

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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.