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Finding the Fourth Proportional to 141,656.94, 195,487.29 and 81,229.86

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Solution

The fourth proportional to 141,656.94, 195,487.29 and 81,229.86 is: 112,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,656.94 : 195,487.29 = 81,229.86 : x
  2. Step 2: Convert to fraction form
    141,656.94/195,487.29 = 81,229.86/x
  3. Step 3: Cross multiply
    141,656.94x = 195,487.29 × 81,229.86
  4. Step 4: Simplify right side
    141,656.94x = 15,879,405,198.48
  5. Step 5: Solve for x
    x = 15,879,405,198.48/141,656.94
  6. Step 6: Final answer
    x = 112,097.62

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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.