Home / 143,972.05-198,685.66-80,308.48

Finding the Fourth Proportional to 143,972.05, 198,685.66 and 80,308.48

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Solution

The fourth proportional to 143,972.05, 198,685.66 and 80,308.48 is: 110,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.05 : 198,685.66 = 80,308.48 : x
  2. Step 2: Convert to fraction form
    143,972.05/198,685.66 = 80,308.48/x
  3. Step 3: Cross multiply
    143,972.05x = 198,685.66 × 80,308.48
  4. Step 4: Simplify right side
    143,972.05x = 15,956,143,352.40
  5. Step 5: Solve for x
    x = 15,956,143,352.40/143,972.05
  6. Step 6: Final answer
    x = 110,828.06

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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.