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Finding the Fourth Proportional to 108,719.21, 150,034.04 and 65,692.73

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Solution

The fourth proportional to 108,719.21, 150,034.04 and 65,692.73 is: 90,656.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,719.21 : 150,034.04 = 65,692.73 : x
  2. Step 2: Convert to fraction form
    108,719.21/150,034.04 = 65,692.73/x
  3. Step 3: Cross multiply
    108,719.21x = 150,034.04 × 65,692.73
  4. Step 4: Simplify right side
    108,719.21x = 9,856,145,680.53
  5. Step 5: Solve for x
    x = 9,856,145,680.53/108,719.21
  6. Step 6: Final answer
    x = 90,656.89

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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.