Home / 139,968,689.70-209,953,034.55-120,821,067.30

Finding the Fourth Proportional to 139,968,689.70, 209,953,034.55 and 120,821,067.30

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Solution

The fourth proportional to 139,968,689.70, 209,953,034.55 and 120,821,067.30 is: 181,231,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,689.70 : 209,953,034.55 = 120,821,067.30 : x
  2. Step 2: Convert to fraction form
    139,968,689.70/209,953,034.55 = 120,821,067.30/x
  3. Step 3: Cross multiply
    139,968,689.70x = 209,953,034.55 × 120,821,067.30
  4. Step 4: Simplify right side
    139,968,689.70x = 25,366,749,717,204,776
  5. Step 5: Solve for x
    x = 25,366,749,717,204,776/139,968,689.70
  6. Step 6: Final answer
    x = 181,231,600.95

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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.