Home / 120,100,100.40-180,150,150.60-111,490,756.20

Finding the Fourth Proportional to 120,100,100.40, 180,150,150.60 and 111,490,756.20

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Solution

The fourth proportional to 120,100,100.40, 180,150,150.60 and 111,490,756.20 is: 167,236,134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,100,100.40 : 180,150,150.60 = 111,490,756.20 : x
  2. Step 2: Convert to fraction form
    120,100,100.40/180,150,150.60 = 111,490,756.20/x
  3. Step 3: Cross multiply
    120,100,100.40x = 180,150,150.60 × 111,490,756.20
  4. Step 4: Simplify right side
    120,100,100.40x = 20,085,076,519,937,884
  5. Step 5: Solve for x
    x = 20,085,076,519,937,884/120,100,100.40
  6. Step 6: Final answer
    x = 167,236,134.30

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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.