Home / 143,312.86-215,000.21-43,481.09

Finding the Fourth Proportional to 143,312.86, 215,000.21 and 43,481.09

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Solution

The fourth proportional to 143,312.86, 215,000.21 and 43,481.09 is: 65,231.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,312.86 : 215,000.21 = 43,481.09 : x
  2. Step 2: Convert to fraction form
    143,312.86/215,000.21 = 43,481.09/x
  3. Step 3: Cross multiply
    143,312.86x = 215,000.21 × 43,481.09
  4. Step 4: Simplify right side
    143,312.86x = 9,348,443,481.03
  5. Step 5: Solve for x
    x = 9,348,443,481.03/143,312.86
  6. Step 6: Final answer
    x = 65,231.02

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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.