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Finding the Fourth Proportional to 170,666.76, 256,221.90 and 131,251.80

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Solution

The fourth proportional to 170,666.76, 256,221.90 and 131,251.80 is: 197,048.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,666.76 : 256,221.90 = 131,251.80 : x
  2. Step 2: Convert to fraction form
    170,666.76/256,221.90 = 131,251.80/x
  3. Step 3: Cross multiply
    170,666.76x = 256,221.90 × 131,251.80
  4. Step 4: Simplify right side
    170,666.76x = 33,629,585,574.42
  5. Step 5: Solve for x
    x = 33,629,585,574.42/170,666.76
  6. Step 6: Final answer
    x = 197,048.25

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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.