Home / 139,968,562.70-209,952,844.05-120,820,940.30

Finding the Fourth Proportional to 139,968,562.70, 209,952,844.05 and 120,820,940.30

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Solution

The fourth proportional to 139,968,562.70, 209,952,844.05 and 120,820,940.30 is: 181,231,410.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,562.70 : 209,952,844.05 = 120,820,940.30 : x
  2. Step 2: Convert to fraction form
    139,968,562.70/209,952,844.05 = 120,820,940.30/x
  3. Step 3: Cross multiply
    139,968,562.70x = 209,952,844.05 × 120,820,940.30
  4. Step 4: Simplify right side
    139,968,562.70x = 25,366,700,036,780,260
  5. Step 5: Solve for x
    x = 25,366,700,036,780,260/139,968,562.70
  6. Step 6: Final answer
    x = 181,231,410.45

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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.