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Finding the Fourth Proportional to 141,685, 195,517.70 and 81,252.70

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Solution

The fourth proportional to 141,685, 195,517.70 and 81,252.70 is: 112,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,685 : 195,517.70 = 81,252.70 : x
  2. Step 2: Convert to fraction form
    141,685/195,517.70 = 81,252.70/x
  3. Step 3: Cross multiply
    141,685x = 195,517.70 × 81,252.70
  4. Step 4: Simplify right side
    141,685x = 15,886,341,022.79
  5. Step 5: Solve for x
    x = 15,886,341,022.79/141,685
  6. Step 6: Final answer
    x = 112,124.37

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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.