Home / 120,388,615.20-180,582,922.80-43,714,144.80

Finding the Fourth Proportional to 120,388,615.20, 180,582,922.80 and 43,714,144.80

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Solution

The fourth proportional to 120,388,615.20, 180,582,922.80 and 43,714,144.80 is: 65,571,217.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,388,615.20 : 180,582,922.80 = 43,714,144.80 : x
  2. Step 2: Convert to fraction form
    120,388,615.20/180,582,922.80 = 43,714,144.80/x
  3. Step 3: Cross multiply
    120,388,615.20x = 180,582,922.80 × 43,714,144.80
  4. Step 4: Simplify right side
    120,388,615.20x = 7,894,028,035,686,421
  5. Step 5: Solve for x
    x = 7,894,028,035,686,421/120,388,615.20
  6. Step 6: Final answer
    x = 65,571,217.20

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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.