Home / 143,829.74-198,485.96-80,171.57

Finding the Fourth Proportional to 143,829.74, 198,485.96 and 80,171.57

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Solution

The fourth proportional to 143,829.74, 198,485.96 and 80,171.57 is: 110,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,829.74 : 198,485.96 = 80,171.57 : x
  2. Step 2: Convert to fraction form
    143,829.74/198,485.96 = 80,171.57/x
  3. Step 3: Cross multiply
    143,829.74x = 198,485.96 × 80,171.57
  4. Step 4: Simplify right side
    143,829.74x = 15,912,929,642.87
  5. Step 5: Solve for x
    x = 15,912,929,642.87/143,829.74
  6. Step 6: Final answer
    x = 110,637.27

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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.