Home / 143,668.58-198,267.14-79,142.49

Finding the Fourth Proportional to 143,668.58, 198,267.14 and 79,142.49

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Solution

The fourth proportional to 143,668.58, 198,267.14 and 79,142.49 is: 109,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,668.58 : 198,267.14 = 79,142.49 : x
  2. Step 2: Convert to fraction form
    143,668.58/198,267.14 = 79,142.49/x
  3. Step 3: Cross multiply
    143,668.58x = 198,267.14 × 79,142.49
  4. Step 4: Simplify right side
    143,668.58x = 15,691,355,342.63
  5. Step 5: Solve for x
    x = 15,691,355,342.63/143,668.58
  6. Step 6: Final answer
    x = 109,219.12

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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.