Home / 231,971.91-320,115.98-135,169.76

Finding the Fourth Proportional to 231,971.91, 320,115.98 and 135,169.76

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Solution

The fourth proportional to 231,971.91, 320,115.98 and 135,169.76 is: 186,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,971.91 : 320,115.98 = 135,169.76 : x
  2. Step 2: Convert to fraction form
    231,971.91/320,115.98 = 135,169.76/x
  3. Step 3: Cross multiply
    231,971.91x = 320,115.98 × 135,169.76
  4. Step 4: Simplify right side
    231,971.91x = 43,269,997,912.34
  5. Step 5: Solve for x
    x = 43,269,997,912.34/231,971.91
  6. Step 6: Final answer
    x = 186,531.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.