Home / 149,142.20-205,816.26-82,074.20

Finding the Fourth Proportional to 149,142.20, 205,816.26 and 82,074.20

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Solution

The fourth proportional to 149,142.20, 205,816.26 and 82,074.20 is: 113,262.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,142.20 : 205,816.26 = 82,074.20 : x
  2. Step 2: Convert to fraction form
    149,142.20/205,816.26 = 82,074.20/x
  3. Step 3: Cross multiply
    149,142.20x = 205,816.26 × 82,074.20
  4. Step 4: Simplify right side
    149,142.20x = 16,892,203,857.41
  5. Step 5: Solve for x
    x = 16,892,203,857.41/149,142.20
  6. Step 6: Final answer
    x = 113,262.41

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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.