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Finding the Fourth Proportional to 170,940.70, 256,411.05 and 82,367.20

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Solution

The fourth proportional to 170,940.70, 256,411.05 and 82,367.20 is: 123,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,940.70 : 256,411.05 = 82,367.20 : x
  2. Step 2: Convert to fraction form
    170,940.70/256,411.05 = 82,367.20/x
  3. Step 3: Cross multiply
    170,940.70x = 256,411.05 × 82,367.20
  4. Step 4: Simplify right side
    170,940.70x = 21,119,860,237.56
  5. Step 5: Solve for x
    x = 21,119,860,237.56/170,940.70
  6. Step 6: Final answer
    x = 123,550.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.