Home / 129,653.20-194,220.60-74,184.40

Finding the Fourth Proportional to 129,653.20, 194,220.60 and 74,184.40

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Solution

The fourth proportional to 129,653.20, 194,220.60 and 74,184.40 is: 111,128.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,653.20 : 194,220.60 = 74,184.40 : x
  2. Step 2: Convert to fraction form
    129,653.20/194,220.60 = 74,184.40/x
  3. Step 3: Cross multiply
    129,653.20x = 194,220.60 × 74,184.40
  4. Step 4: Simplify right side
    129,653.20x = 14,408,138,678.64
  5. Step 5: Solve for x
    x = 14,408,138,678.64/129,653.20
  6. Step 6: Final answer
    x = 111,128.29

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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.