Home / 129,621.70-194,432.55-40,902.40

Finding the Fourth Proportional to 129,621.70, 194,432.55 and 40,902.40

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Solution

The fourth proportional to 129,621.70, 194,432.55 and 40,902.40 is: 61,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,621.70 : 194,432.55 = 40,902.40 : x
  2. Step 2: Convert to fraction form
    129,621.70/194,432.55 = 40,902.40/x
  3. Step 3: Cross multiply
    129,621.70x = 194,432.55 × 40,902.40
  4. Step 4: Simplify right side
    129,621.70x = 7,952,757,933.12
  5. Step 5: Solve for x
    x = 7,952,757,933.12/129,621.70
  6. Step 6: Final answer
    x = 61,353.60

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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.