Home / 143,825.28-198,484.80-80,163.36

Finding the Fourth Proportional to 143,825.28, 198,484.80 and 80,163.36

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Solution

The fourth proportional to 143,825.28, 198,484.80 and 80,163.36 is: 110,628.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,825.28 : 198,484.80 = 80,163.36 : x
  2. Step 2: Convert to fraction form
    143,825.28/198,484.80 = 80,163.36/x
  3. Step 3: Cross multiply
    143,825.28x = 198,484.80 × 80,163.36
  4. Step 4: Simplify right side
    143,825.28x = 15,911,208,476.93
  5. Step 5: Solve for x
    x = 15,911,208,476.93/143,825.28
  6. Step 6: Final answer
    x = 110,628.73

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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.