Home / 129,729.40-194,286.90-87,950.20

Finding the Fourth Proportional to 129,729.40, 194,286.90 and 87,950.20

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Solution

The fourth proportional to 129,729.40, 194,286.90 and 87,950.20 is: 131,717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,729.40 : 194,286.90 = 87,950.20 : x
  2. Step 2: Convert to fraction form
    129,729.40/194,286.90 = 87,950.20/x
  3. Step 3: Cross multiply
    129,729.40x = 194,286.90 × 87,950.20
  4. Step 4: Simplify right side
    129,729.40x = 17,087,571,712.38
  5. Step 5: Solve for x
    x = 17,087,571,712.38/129,729.40
  6. Step 6: Final answer
    x = 131,717.03

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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.