Home / 143,583.38-198,145.07-79,919.81

Finding the Fourth Proportional to 143,583.38, 198,145.07 and 79,919.81

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Solution

The fourth proportional to 143,583.38, 198,145.07 and 79,919.81 is: 110,289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,583.38 : 198,145.07 = 79,919.81 : x
  2. Step 2: Convert to fraction form
    143,583.38/198,145.07 = 79,919.81/x
  3. Step 3: Cross multiply
    143,583.38x = 198,145.07 × 79,919.81
  4. Step 4: Simplify right side
    143,583.38x = 15,835,716,346.84
  5. Step 5: Solve for x
    x = 15,835,716,346.84/143,583.38
  6. Step 6: Final answer
    x = 110,289.34

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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.