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Finding the Fourth Proportional to 148,291.20, 204,619.20 and 84,633.60

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Solution

The fourth proportional to 148,291.20, 204,619.20 and 84,633.60 is: 116,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,291.20 : 204,619.20 = 84,633.60 : x
  2. Step 2: Convert to fraction form
    148,291.20/204,619.20 = 84,633.60/x
  3. Step 3: Cross multiply
    148,291.20x = 204,619.20 × 84,633.60
  4. Step 4: Simplify right side
    148,291.20x = 17,317,659,525.12
  5. Step 5: Solve for x
    x = 17,317,659,525.12/148,291.20
  6. Step 6: Final answer
    x = 116,781.44

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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.