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Finding the Fourth Proportional to 140,809.50, 194,269.27 and 80,336.70

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Solution

The fourth proportional to 140,809.50, 194,269.27 and 80,336.70 is: 110,837.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,809.50 : 194,269.27 = 80,336.70 : x
  2. Step 2: Convert to fraction form
    140,809.50/194,269.27 = 80,336.70/x
  3. Step 3: Cross multiply
    140,809.50x = 194,269.27 × 80,336.70
  4. Step 4: Simplify right side
    140,809.50x = 15,606,952,063.21
  5. Step 5: Solve for x
    x = 15,606,952,063.21/140,809.50
  6. Step 6: Final answer
    x = 110,837.35

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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.