Home / 190,639.62-263,082.78-105,756.75

Finding the Fourth Proportional to 190,639.62, 263,082.78 and 105,756.75

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Solution

The fourth proportional to 190,639.62, 263,082.78 and 105,756.75 is: 145,944.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,639.62 : 263,082.78 = 105,756.75 : x
  2. Step 2: Convert to fraction form
    190,639.62/263,082.78 = 105,756.75/x
  3. Step 3: Cross multiply
    190,639.62x = 263,082.78 × 105,756.75
  4. Step 4: Simplify right side
    190,639.62x = 27,822,779,793.77
  5. Step 5: Solve for x
    x = 27,822,779,793.77/190,639.62
  6. Step 6: Final answer
    x = 145,944.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.