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Finding the Fourth Proportional to 190,419, 262,668.78 and 118,764.60

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Solution

The fourth proportional to 190,419, 262,668.78 and 118,764.60 is: 163,826.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,419 : 262,668.78 = 118,764.60 : x
  2. Step 2: Convert to fraction form
    190,419/262,668.78 = 118,764.60/x
  3. Step 3: Cross multiply
    190,419x = 262,668.78 × 118,764.60
  4. Step 4: Simplify right side
    190,419x = 31,195,752,589.19
  5. Step 5: Solve for x
    x = 31,195,752,589.19/190,419
  6. Step 6: Final answer
    x = 163,826.89

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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.