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Finding the Fourth Proportional to 108,932.88, 150,343.74 and 66,515.88

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Solution

The fourth proportional to 108,932.88, 150,343.74 and 66,515.88 is: 91,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,932.88 : 150,343.74 = 66,515.88 : x
  2. Step 2: Convert to fraction form
    108,932.88/150,343.74 = 66,515.88/x
  3. Step 3: Cross multiply
    108,932.88x = 150,343.74 × 66,515.88
  4. Step 4: Simplify right side
    108,932.88x = 10,000,246,168.59
  5. Step 5: Solve for x
    x = 10,000,246,168.59/108,932.88
  6. Step 6: Final answer
    x = 91,801.91

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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.