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Finding the Fourth Proportional to 141,843.80, 195,689.56 and 81,392.60

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Solution

The fourth proportional to 141,843.80, 195,689.56 and 81,392.60 is: 112,290.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,843.80 : 195,689.56 = 81,392.60 : x
  2. Step 2: Convert to fraction form
    141,843.80/195,689.56 = 81,392.60/x
  3. Step 3: Cross multiply
    141,843.80x = 195,689.56 × 81,392.60
  4. Step 4: Simplify right side
    141,843.80x = 15,927,682,081.26
  5. Step 5: Solve for x
    x = 15,927,682,081.26/141,843.80
  6. Step 6: Final answer
    x = 112,290.29

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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.