Home / 143,859.64-198,533.04-80,197.90

Finding the Fourth Proportional to 143,859.64, 198,533.04 and 80,197.90

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Solution

The fourth proportional to 143,859.64, 198,533.04 and 80,197.90 is: 110,676.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,859.64 : 198,533.04 = 80,197.90 : x
  2. Step 2: Convert to fraction form
    143,859.64/198,533.04 = 80,197.90/x
  3. Step 3: Cross multiply
    143,859.64x = 198,533.04 × 80,197.90
  4. Step 4: Simplify right side
    143,859.64x = 15,921,932,888.62
  5. Step 5: Solve for x
    x = 15,921,932,888.62/143,859.64
  6. Step 6: Final answer
    x = 110,676.86

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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.