Home / 143,682.36-198,287.81-80,020.16

Finding the Fourth Proportional to 143,682.36, 198,287.81 and 80,020.16

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Solution

The fourth proportional to 143,682.36, 198,287.81 and 80,020.16 is: 110,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,682.36 : 198,287.81 = 80,020.16 : x
  2. Step 2: Convert to fraction form
    143,682.36/198,287.81 = 80,020.16/x
  3. Step 3: Cross multiply
    143,682.36x = 198,287.81 × 80,020.16
  4. Step 4: Simplify right side
    143,682.36x = 15,867,022,494.53
  5. Step 5: Solve for x
    x = 15,867,022,494.53/143,682.36
  6. Step 6: Final answer
    x = 110,431.25

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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.