Home / 143,566.62-198,128.46-83,139.90

Finding the Fourth Proportional to 143,566.62, 198,128.46 and 83,139.90

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Solution

The fourth proportional to 143,566.62, 198,128.46 and 83,139.90 is: 114,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,566.62 : 198,128.46 = 83,139.90 : x
  2. Step 2: Convert to fraction form
    143,566.62/198,128.46 = 83,139.90/x
  3. Step 3: Cross multiply
    143,566.62x = 198,128.46 × 83,139.90
  4. Step 4: Simplify right side
    143,566.62x = 16,472,380,351.55
  5. Step 5: Solve for x
    x = 16,472,380,351.55/143,566.62
  6. Step 6: Final answer
    x = 114,736.84

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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.