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Finding the Fourth Proportional to 101,236.32, 151,855.02 and 66,396.60

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Solution

The fourth proportional to 101,236.32, 151,855.02 and 66,396.60 is: 99,595.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,236.32 : 151,855.02 = 66,396.60 : x
  2. Step 2: Convert to fraction form
    101,236.32/151,855.02 = 66,396.60/x
  3. Step 3: Cross multiply
    101,236.32x = 151,855.02 × 66,396.60
  4. Step 4: Simplify right side
    101,236.32x = 10,082,657,020.93
  5. Step 5: Solve for x
    x = 10,082,657,020.93/101,236.32
  6. Step 6: Final answer
    x = 99,595.25

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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.