Home / 129,800.40-194,686.20-36,315.60

Finding the Fourth Proportional to 129,800.40, 194,686.20 and 36,315.60

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Solution

The fourth proportional to 129,800.40, 194,686.20 and 36,315.60 is: 54,469.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,800.40 : 194,686.20 = 36,315.60 : x
  2. Step 2: Convert to fraction form
    129,800.40/194,686.20 = 36,315.60/x
  3. Step 3: Cross multiply
    129,800.40x = 194,686.20 × 36,315.60
  4. Step 4: Simplify right side
    129,800.40x = 7,070,146,164.72
  5. Step 5: Solve for x
    x = 7,070,146,164.72/129,800.40
  6. Step 6: Final answer
    x = 54,469.37

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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.