Home / 100,120,320.40-150,180,480.60-31,968,000.40

Finding the Fourth Proportional to 100,120,320.40, 150,180,480.60 and 31,968,000.40

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Solution

The fourth proportional to 100,120,320.40, 150,180,480.60 and 31,968,000.40 is: 47,952,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,120,320.40 : 150,180,480.60 = 31,968,000.40 : x
  2. Step 2: Convert to fraction form
    100,120,320.40/150,180,480.60 = 31,968,000.40/x
  3. Step 3: Cross multiply
    100,120,320.40x = 150,180,480.60 × 31,968,000.40
  4. Step 4: Simplify right side
    100,120,320.40x = 4,800,969,663,892,992
  5. Step 5: Solve for x
    x = 4,800,969,663,892,992/100,120,320.40
  6. Step 6: Final answer
    x = 47,952,000.60

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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.