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Finding the Fourth Proportional to 123,419.60, 170,277.48 and 80,379.44

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Solution

The fourth proportional to 123,419.60, 170,277.48 and 80,379.44 is: 110,896.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,419.60 : 170,277.48 = 80,379.44 : x
  2. Step 2: Convert to fraction form
    123,419.60/170,277.48 = 80,379.44/x
  3. Step 3: Cross multiply
    123,419.60x = 170,277.48 × 80,379.44
  4. Step 4: Simplify right side
    123,419.60x = 13,686,808,487.01
  5. Step 5: Solve for x
    x = 13,686,808,487.01/123,419.60
  6. Step 6: Final answer
    x = 110,896.56

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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.