Home / 142,183.28-196,213.01-77,653.42

Finding the Fourth Proportional to 142,183.28, 196,213.01 and 77,653.42

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Solution

The fourth proportional to 142,183.28, 196,213.01 and 77,653.42 is: 107,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,183.28 : 196,213.01 = 77,653.42 : x
  2. Step 2: Convert to fraction form
    142,183.28/196,213.01 = 77,653.42/x
  3. Step 3: Cross multiply
    142,183.28x = 196,213.01 × 77,653.42
  4. Step 4: Simplify right side
    142,183.28x = 15,236,610,396.19
  5. Step 5: Solve for x
    x = 15,236,610,396.19/142,183.28
  6. Step 6: Final answer
    x = 107,161.76

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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.