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Finding the Fourth Proportional to 111,682.64, 154,117.81 and 63,940.43

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Solution

The fourth proportional to 111,682.64, 154,117.81 and 63,940.43 is: 88,235.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,682.64 : 154,117.81 = 63,940.43 : x
  2. Step 2: Convert to fraction form
    111,682.64/154,117.81 = 63,940.43/x
  3. Step 3: Cross multiply
    111,682.64x = 154,117.81 × 63,940.43
  4. Step 4: Simplify right side
    111,682.64x = 9,854,359,042.06
  5. Step 5: Solve for x
    x = 9,854,359,042.06/111,682.64
  6. Step 6: Final answer
    x = 88,235.37

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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.