Home / 143,635.32-198,183.66-87,034.68

Finding the Fourth Proportional to 143,635.32, 198,183.66 and 87,034.68

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Solution

The fourth proportional to 143,635.32, 198,183.66 and 87,034.68 is: 120,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,635.32 : 198,183.66 = 87,034.68 : x
  2. Step 2: Convert to fraction form
    143,635.32/198,183.66 = 87,034.68/x
  3. Step 3: Cross multiply
    143,635.32x = 198,183.66 × 87,034.68
  4. Step 4: Simplify right side
    143,635.32x = 17,248,851,429.33
  5. Step 5: Solve for x
    x = 17,248,851,429.33/143,635.32
  6. Step 6: Final answer
    x = 120,087.81

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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.