Home / 209,897,355.42-289,622,477.07-121,771,151.60

Finding the Fourth Proportional to 209,897,355.42, 289,622,477.07 and 121,771,151.60

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Solution

The fourth proportional to 209,897,355.42, 289,622,477.07 and 121,771,151.60 is: 168,023,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,897,355.42 : 289,622,477.07 = 121,771,151.60 : x
  2. Step 2: Convert to fraction form
    209,897,355.42/289,622,477.07 = 121,771,151.60/x
  3. Step 3: Cross multiply
    209,897,355.42x = 289,622,477.07 × 121,771,151.60
  4. Step 4: Simplify right side
    209,897,355.42x = 35,267,662,560,610,380
  5. Step 5: Solve for x
    x = 35,267,662,560,610,380/209,897,355.42
  6. Step 6: Final answer
    x = 168,023,377.38

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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.