Home / 129,631.70-194,447.55-40,912.40

Finding the Fourth Proportional to 129,631.70, 194,447.55 and 40,912.40

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Solution

The fourth proportional to 129,631.70, 194,447.55 and 40,912.40 is: 61,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,631.70 : 194,447.55 = 40,912.40 : x
  2. Step 2: Convert to fraction form
    129,631.70/194,447.55 = 40,912.40/x
  3. Step 3: Cross multiply
    129,631.70x = 194,447.55 × 40,912.40
  4. Step 4: Simplify right side
    129,631.70x = 7,955,315,944.62
  5. Step 5: Solve for x
    x = 7,955,315,944.62/129,631.70
  6. Step 6: Final answer
    x = 61,368.60

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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.