Home / 209,609,157.56-289,261,823.22-121,555,436.45

Finding the Fourth Proportional to 209,609,157.56, 289,261,823.22 and 121,555,436.45

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Solution

The fourth proportional to 209,609,157.56, 289,261,823.22 and 121,555,436.45 is: 167,747,189.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,609,157.56 : 289,261,823.22 = 121,555,436.45 : x
  2. Step 2: Convert to fraction form
    209,609,157.56/289,261,823.22 = 121,555,436.45/x
  3. Step 3: Cross multiply
    209,609,157.56x = 289,261,823.22 × 121,555,436.45
  4. Step 4: Simplify right side
    209,609,157.56x = 35,161,347,168,383,536
  5. Step 5: Solve for x
    x = 35,161,347,168,383,536/209,609,157.56
  6. Step 6: Final answer
    x = 167,747,189.95

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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.