Home / 209,610,996.21-289,264,296.42-120,295,818.23

Finding the Fourth Proportional to 209,610,996.21, 289,264,296.42 and 120,295,818.23

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Solution

The fourth proportional to 209,610,996.21, 289,264,296.42 and 120,295,818.23 is: 166,008,872.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,610,996.21 : 289,264,296.42 = 120,295,818.23 : x
  2. Step 2: Convert to fraction form
    209,610,996.21/289,264,296.42 = 120,295,818.23/x
  3. Step 3: Cross multiply
    209,610,996.21x = 289,264,296.42 × 120,295,818.23
  4. Step 4: Simplify right side
    209,610,996.21x = 34,797,285,221,122,840
  5. Step 5: Solve for x
    x = 34,797,285,221,122,840/209,610,996.21
  6. Step 6: Final answer
    x = 166,008,872.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.