Home / 209,486,091.09-289,125,984.33-121,435,167.45

Finding the Fourth Proportional to 209,486,091.09, 289,125,984.33 and 121,435,167.45

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Solution

The fourth proportional to 209,486,091.09, 289,125,984.33 and 121,435,167.45 is: 167,600,923.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,486,091.09 : 289,125,984.33 = 121,435,167.45 : x
  2. Step 2: Convert to fraction form
    209,486,091.09/289,125,984.33 = 121,435,167.45/x
  3. Step 3: Cross multiply
    209,486,091.09x = 289,125,984.33 × 121,435,167.45
  4. Step 4: Simplify right side
    209,486,091.09x = 35,110,062,321,328,836
  5. Step 5: Solve for x
    x = 35,110,062,321,328,836/209,486,091.09
  6. Step 6: Final answer
    x = 167,600,923.47

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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.