Home / 129,947.70-194,921.55-79,865.40

Finding the Fourth Proportional to 129,947.70, 194,921.55 and 79,865.40

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Solution

The fourth proportional to 129,947.70, 194,921.55 and 79,865.40 is: 119,798.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,947.70 : 194,921.55 = 79,865.40 : x
  2. Step 2: Convert to fraction form
    129,947.70/194,921.55 = 79,865.40/x
  3. Step 3: Cross multiply
    129,947.70x = 194,921.55 × 79,865.40
  4. Step 4: Simplify right side
    129,947.70x = 15,567,487,559.37
  5. Step 5: Solve for x
    x = 15,567,487,559.37/129,947.70
  6. Step 6: Final answer
    x = 119,798.10

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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.