Home / 113,817.72-170,313.42-82,290.90

Finding the Fourth Proportional to 113,817.72, 170,313.42 and 82,290.90

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Solution

The fourth proportional to 113,817.72, 170,313.42 and 82,290.90 is: 123,137.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,817.72 : 170,313.42 = 82,290.90 : x
  2. Step 2: Convert to fraction form
    113,817.72/170,313.42 = 82,290.90/x
  3. Step 3: Cross multiply
    113,817.72x = 170,313.42 × 82,290.90
  4. Step 4: Simplify right side
    113,817.72x = 14,015,244,613.88
  5. Step 5: Solve for x
    x = 14,015,244,613.88/113,817.72
  6. Step 6: Final answer
    x = 123,137.63

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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.