Home / 139,979,431.20-209,969,146.80-119,572,096.80

Finding the Fourth Proportional to 139,979,431.20, 209,969,146.80 and 119,572,096.80

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Solution

The fourth proportional to 139,979,431.20, 209,969,146.80 and 119,572,096.80 is: 179,358,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,979,431.20 : 209,969,146.80 = 119,572,096.80 : x
  2. Step 2: Convert to fraction form
    139,979,431.20/209,969,146.80 = 119,572,096.80/x
  3. Step 3: Cross multiply
    139,979,431.20x = 209,969,146.80 × 119,572,096.80
  4. Step 4: Simplify right side
    139,979,431.20x = 25,106,451,146,183,012
  5. Step 5: Solve for x
    x = 25,106,451,146,183,012/139,979,431.20
  6. Step 6: Final answer
    x = 179,358,145.20

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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.