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Finding the Fourth Proportional to 170,074.80, 255,371.40 and 100,090.80

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Solution

The fourth proportional to 170,074.80, 255,371.40 and 100,090.80 is: 150,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,074.80 : 255,371.40 = 100,090.80 : x
  2. Step 2: Convert to fraction form
    170,074.80/255,371.40 = 100,090.80/x
  3. Step 3: Cross multiply
    170,074.80x = 255,371.40 × 100,090.80
  4. Step 4: Simplify right side
    170,074.80x = 25,560,327,723.12
  5. Step 5: Solve for x
    x = 25,560,327,723.12/170,074.80
  6. Step 6: Final answer
    x = 150,288.74

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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.