Home / 209,609,139.56-289,261,798.41-121,555,418.38

Finding the Fourth Proportional to 209,609,139.56, 289,261,798.41 and 121,555,418.38

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Solution

The fourth proportional to 209,609,139.56, 289,261,798.41 and 121,555,418.38 is: 167,747,165.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,609,139.56 : 289,261,798.41 = 121,555,418.38 : x
  2. Step 2: Convert to fraction form
    209,609,139.56/289,261,798.41 = 121,555,418.38/x
  3. Step 3: Cross multiply
    209,609,139.56x = 289,261,798.41 × 121,555,418.38
  4. Step 4: Simplify right side
    209,609,139.56x = 35,161,338,926,810,228
  5. Step 5: Solve for x
    x = 35,161,338,926,810,228/209,609,139.56
  6. Step 6: Final answer
    x = 167,747,165.04

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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.