Home / 143,867.76-198,544.14-80,205.90

Finding the Fourth Proportional to 143,867.76, 198,544.14 and 80,205.90

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Solution

The fourth proportional to 143,867.76, 198,544.14 and 80,205.90 is: 110,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,867.76 : 198,544.14 = 80,205.90 : x
  2. Step 2: Convert to fraction form
    143,867.76/198,544.14 = 80,205.90/x
  3. Step 3: Cross multiply
    143,867.76x = 198,544.14 × 80,205.90
  4. Step 4: Simplify right side
    143,867.76x = 15,924,411,438.43
  5. Step 5: Solve for x
    x = 15,924,411,438.43/143,867.76
  6. Step 6: Final answer
    x = 110,687.84

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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.