Home / 256,855.11-354,450.89-142,131.77

Finding the Fourth Proportional to 256,855.11, 354,450.89 and 142,131.77

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Solution

The fourth proportional to 256,855.11, 354,450.89 and 142,131.77 is: 196,136.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,855.11 : 354,450.89 = 142,131.77 : x
  2. Step 2: Convert to fraction form
    256,855.11/354,450.89 = 142,131.77/x
  3. Step 3: Cross multiply
    256,855.11x = 354,450.89 × 142,131.77
  4. Step 4: Simplify right side
    256,855.11x = 50,378,729,890.86
  5. Step 5: Solve for x
    x = 50,378,729,890.86/256,855.11
  6. Step 6: Final answer
    x = 196,136.76

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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.