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Finding the Fourth Proportional to 108,986.39, 150,396.42 and 63,668.57

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Solution

The fourth proportional to 108,986.39, 150,396.42 and 63,668.57 is: 87,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,986.39 : 150,396.42 = 63,668.57 : x
  2. Step 2: Convert to fraction form
    108,986.39/150,396.42 = 63,668.57/x
  3. Step 3: Cross multiply
    108,986.39x = 150,396.42 × 63,668.57
  4. Step 4: Simplify right side
    108,986.39x = 9,575,524,994.52
  5. Step 5: Solve for x
    x = 9,575,524,994.52/108,986.39
  6. Step 6: Final answer
    x = 87,859.82

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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.