Home / 143,970.05-198,682.90-80,306.48

Finding the Fourth Proportional to 143,970.05, 198,682.90 and 80,306.48

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Solution

The fourth proportional to 143,970.05, 198,682.90 and 80,306.48 is: 110,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,970.05 : 198,682.90 = 80,306.48 : x
  2. Step 2: Convert to fraction form
    143,970.05/198,682.90 = 80,306.48/x
  3. Step 3: Cross multiply
    143,970.05x = 198,682.90 × 80,306.48
  4. Step 4: Simplify right side
    143,970.05x = 15,955,524,631.13
  5. Step 5: Solve for x
    x = 15,955,524,631.13/143,970.05
  6. Step 6: Final answer
    x = 110,825.30

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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.