Home / 129,286.37-194,111.20-66,151.77

Finding the Fourth Proportional to 129,286.37, 194,111.20 and 66,151.77

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Solution

The fourth proportional to 129,286.37, 194,111.20 and 66,151.77 is: 99,320.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,286.37 : 194,111.20 = 66,151.77 : x
  2. Step 2: Convert to fraction form
    129,286.37/194,111.20 = 66,151.77/x
  3. Step 3: Cross multiply
    129,286.37x = 194,111.20 × 66,151.77
  4. Step 4: Simplify right side
    129,286.37x = 12,840,798,811.60
  5. Step 5: Solve for x
    x = 12,840,798,811.60/129,286.37
  6. Step 6: Final answer
    x = 99,320.59

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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.