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Finding the Fourth Proportional to 111,649.88, 154,033.20 and 63,877.64

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Solution

The fourth proportional to 111,649.88, 154,033.20 and 63,877.64 is: 88,126.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,649.88 : 154,033.20 = 63,877.64 : x
  2. Step 2: Convert to fraction form
    111,649.88/154,033.20 = 63,877.64/x
  3. Step 3: Cross multiply
    111,649.88x = 154,033.20 × 63,877.64
  4. Step 4: Simplify right side
    111,649.88x = 9,839,277,297.65
  5. Step 5: Solve for x
    x = 9,839,277,297.65/111,649.88
  6. Step 6: Final answer
    x = 88,126.18

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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.