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Finding the Fourth Proportional to 149,063.56, 205,635.44 and 88,591.40

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Solution

The fourth proportional to 149,063.56, 205,635.44 and 88,591.40 is: 122,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,063.56 : 205,635.44 = 88,591.40 : x
  2. Step 2: Convert to fraction form
    149,063.56/205,635.44 = 88,591.40/x
  3. Step 3: Cross multiply
    149,063.56x = 205,635.44 × 88,591.40
  4. Step 4: Simplify right side
    149,063.56x = 18,217,531,519.22
  5. Step 5: Solve for x
    x = 18,217,531,519.22/149,063.56
  6. Step 6: Final answer
    x = 122,213.18

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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.