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Finding the Fourth Proportional to 101,229.32, 151,844.52 and 66,389.60

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Solution

The fourth proportional to 101,229.32, 151,844.52 and 66,389.60 is: 99,584.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,229.32 : 151,844.52 = 66,389.60 : x
  2. Step 2: Convert to fraction form
    101,229.32/151,844.52 = 66,389.60/x
  3. Step 3: Cross multiply
    101,229.32x = 151,844.52 × 66,389.60
  4. Step 4: Simplify right side
    101,229.32x = 10,080,896,944.99
  5. Step 5: Solve for x
    x = 10,080,896,944.99/101,229.32
  6. Step 6: Final answer
    x = 99,584.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.