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Finding the Fourth Proportional to 136,200.30, 203,911.65 and 120,648.30

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Solution

The fourth proportional to 136,200.30, 203,911.65 and 120,648.30 is: 180,628.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,200.30 : 203,911.65 = 120,648.30 : x
  2. Step 2: Convert to fraction form
    136,200.30/203,911.65 = 120,648.30/x
  3. Step 3: Cross multiply
    136,200.30x = 203,911.65 × 120,648.30
  4. Step 4: Simplify right side
    136,200.30x = 24,601,593,922.70
  5. Step 5: Solve for x
    x = 24,601,593,922.70/136,200.30
  6. Step 6: Final answer
    x = 180,628.05

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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.