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Finding the Fourth Proportional to 108,745.50, 150,069.60 and 66,296.64

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Solution

The fourth proportional to 108,745.50, 150,069.60 and 66,296.64 is: 91,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,745.50 : 150,069.60 = 66,296.64 : x
  2. Step 2: Convert to fraction form
    108,745.50/150,069.60 = 66,296.64/x
  3. Step 3: Cross multiply
    108,745.50x = 150,069.60 × 66,296.64
  4. Step 4: Simplify right side
    108,745.50x = 9,949,110,246.14
  5. Step 5: Solve for x
    x = 9,949,110,246.14/108,745.50
  6. Step 6: Final answer
    x = 91,489.86

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1.5x scale

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.