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Finding the Fourth Proportional to 135,171.20, 202,961.60 and 104,041.60

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Solution

The fourth proportional to 135,171.20, 202,961.60 and 104,041.60 is: 156,220.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,171.20 : 202,961.60 = 104,041.60 : x
  2. Step 2: Convert to fraction form
    135,171.20/202,961.60 = 104,041.60/x
  3. Step 3: Cross multiply
    135,171.20x = 202,961.60 × 104,041.60
  4. Step 4: Simplify right side
    135,171.20x = 21,116,449,602.56
  5. Step 5: Solve for x
    x = 21,116,449,602.56/135,171.20
  6. Step 6: Final answer
    x = 156,220.04

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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.