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Finding the Fourth Proportional to 170,708.75, 256,114.38 and 80,819.99

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Solution

The fourth proportional to 170,708.75, 256,114.38 and 80,819.99 is: 121,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,708.75 : 256,114.38 = 80,819.99 : x
  2. Step 2: Convert to fraction form
    170,708.75/256,114.38 = 80,819.99/x
  3. Step 3: Cross multiply
    170,708.75x = 256,114.38 × 80,819.99
  4. Step 4: Simplify right side
    170,708.75x = 20,699,161,630.46
  5. Step 5: Solve for x
    x = 20,699,161,630.46/170,708.75
  6. Step 6: Final answer
    x = 121,254.25

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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.