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Finding the Fourth Proportional to 101,192.64, 139,635.24 and 58,742.88

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Solution

The fourth proportional to 101,192.64, 139,635.24 and 58,742.88 is: 81,059.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,192.64 : 139,635.24 = 58,742.88 : x
  2. Step 2: Convert to fraction form
    101,192.64/139,635.24 = 58,742.88/x
  3. Step 3: Cross multiply
    101,192.64x = 139,635.24 × 58,742.88
  4. Step 4: Simplify right side
    101,192.64x = 8,202,576,147.09
  5. Step 5: Solve for x
    x = 8,202,576,147.09/101,192.64
  6. Step 6: Final answer
    x = 81,059.02

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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.