Home / 141,789.36-195,672.92-78,127.12

Finding the Fourth Proportional to 141,789.36, 195,672.92 and 78,127.12

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Solution

The fourth proportional to 141,789.36, 195,672.92 and 78,127.12 is: 107,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,789.36 : 195,672.92 = 78,127.12 : x
  2. Step 2: Convert to fraction form
    141,789.36/195,672.92 = 78,127.12/x
  3. Step 3: Cross multiply
    141,789.36x = 195,672.92 × 78,127.12
  4. Step 4: Simplify right side
    141,789.36x = 15,287,361,701.59
  5. Step 5: Solve for x
    x = 15,287,361,701.59/141,789.36
  6. Step 6: Final answer
    x = 107,817.41

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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.