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Finding the Fourth Proportional to 85,200,400.20, 127,800,600.30 and 85,200,400.20

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Solution

The fourth proportional to 85,200,400.20, 127,800,600.30 and 85,200,400.20 is: 127,800,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,200,400.20 : 127,800,600.30 = 85,200,400.20 : x
  2. Step 2: Convert to fraction form
    85,200,400.20/127,800,600.30 = 85,200,400.20/x
  3. Step 3: Cross multiply
    85,200,400.20x = 127,800,600.30 × 85,200,400.20
  4. Step 4: Simplify right side
    85,200,400.20x = 10,888,662,291,360,240
  5. Step 5: Solve for x
    x = 10,888,662,291,360,240/85,200,400.20
  6. Step 6: Final answer
    x = 127,800,600.30

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Similar ratio
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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.