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Finding the Fourth Proportional to 135,453.60, 203,410.80 and 100,432.80

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Solution

The fourth proportional to 135,453.60, 203,410.80 and 100,432.80 is: 150,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,453.60 : 203,410.80 = 100,432.80 : x
  2. Step 2: Convert to fraction form
    135,453.60/203,410.80 = 100,432.80/x
  3. Step 3: Cross multiply
    135,453.60x = 203,410.80 × 100,432.80
  4. Step 4: Simplify right side
    135,453.60x = 20,429,116,194.24
  5. Step 5: Solve for x
    x = 20,429,116,194.24/135,453.60
  6. Step 6: Final answer
    x = 150,820.03

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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.