Home / 141,899.76-195,817.92-78,236.48

Finding the Fourth Proportional to 141,899.76, 195,817.92 and 78,236.48

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Solution

The fourth proportional to 141,899.76, 195,817.92 and 78,236.48 is: 107,964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,899.76 : 195,817.92 = 78,236.48 : x
  2. Step 2: Convert to fraction form
    141,899.76/195,817.92 = 78,236.48/x
  3. Step 3: Cross multiply
    141,899.76x = 195,817.92 × 78,236.48
  4. Step 4: Simplify right side
    141,899.76x = 15,320,104,781.72
  5. Step 5: Solve for x
    x = 15,320,104,781.72/141,899.76
  6. Step 6: Final answer
    x = 107,964.28

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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.