Home / 139,969,199.70-209,953,799.55-120,821,577.30

Finding the Fourth Proportional to 139,969,199.70, 209,953,799.55 and 120,821,577.30

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Solution

The fourth proportional to 139,969,199.70, 209,953,799.55 and 120,821,577.30 is: 181,232,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,199.70 : 209,953,799.55 = 120,821,577.30 : x
  2. Step 2: Convert to fraction form
    139,969,199.70/209,953,799.55 = 120,821,577.30/x
  3. Step 3: Cross multiply
    139,969,199.70x = 209,953,799.55 × 120,821,577.30
  4. Step 4: Simplify right side
    139,969,199.70x = 25,366,949,221,759,032
  5. Step 5: Solve for x
    x = 25,366,949,221,759,032/139,969,199.70
  6. Step 6: Final answer
    x = 181,232,365.95

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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.