Home / 141,861.48-195,753.36-78,187

Finding the Fourth Proportional to 141,861.48, 195,753.36 and 78,187

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Solution

The fourth proportional to 141,861.48, 195,753.36 and 78,187 is: 107,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,861.48 : 195,753.36 = 78,187 : x
  2. Step 2: Convert to fraction form
    141,861.48/195,753.36 = 78,187/x
  3. Step 3: Cross multiply
    141,861.48x = 195,753.36 × 78,187
  4. Step 4: Simplify right side
    141,861.48x = 15,305,367,958.32
  5. Step 5: Solve for x
    x = 15,305,367,958.32/141,861.48
  6. Step 6: Final answer
    x = 107,889.53

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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.