Home / 120,388,619.20-180,582,928.80-43,714,148.80

Finding the Fourth Proportional to 120,388,619.20, 180,582,928.80 and 43,714,148.80

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Solution

The fourth proportional to 120,388,619.20, 180,582,928.80 and 43,714,148.80 is: 65,571,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,388,619.20 : 180,582,928.80 = 43,714,148.80 : x
  2. Step 2: Convert to fraction form
    120,388,619.20/180,582,928.80 = 43,714,148.80/x
  3. Step 3: Cross multiply
    120,388,619.20x = 180,582,928.80 × 43,714,148.80
  4. Step 4: Simplify right side
    120,388,619.20x = 7,894,029,020,303,005
  5. Step 5: Solve for x
    x = 7,894,029,020,303,005/120,388,619.20
  6. Step 6: Final answer
    x = 65,571,223.20

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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.