Home / 141,845.56-195,744.45-78,189.28

Finding the Fourth Proportional to 141,845.56, 195,744.45 and 78,189.28

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Solution

The fourth proportional to 141,845.56, 195,744.45 and 78,189.28 is: 107,899.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,845.56 : 195,744.45 = 78,189.28 : x
  2. Step 2: Convert to fraction form
    141,845.56/195,744.45 = 78,189.28/x
  3. Step 3: Cross multiply
    141,845.56x = 195,744.45 × 78,189.28
  4. Step 4: Simplify right side
    141,845.56x = 15,305,117,609.50
  5. Step 5: Solve for x
    x = 15,305,117,609.50/141,845.56
  6. Step 6: Final answer
    x = 107,899.87

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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.