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Finding the Fourth Proportional to 135,658.20, 203,487.30 and 100,228.80

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Solution

The fourth proportional to 135,658.20, 203,487.30 and 100,228.80 is: 150,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,658.20 : 203,487.30 = 100,228.80 : x
  2. Step 2: Convert to fraction form
    135,658.20/203,487.30 = 100,228.80/x
  3. Step 3: Cross multiply
    135,658.20x = 203,487.30 × 100,228.80
  4. Step 4: Simplify right side
    135,658.20x = 20,395,287,894.24
  5. Step 5: Solve for x
    x = 20,395,287,894.24/135,658.20
  6. Step 6: Final answer
    x = 150,343.20

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1.5x scale

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.