Home / 139,968,370.70-209,952,556.05-128,914,397.90

Finding the Fourth Proportional to 139,968,370.70, 209,952,556.05 and 128,914,397.90

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Solution

The fourth proportional to 139,968,370.70, 209,952,556.05 and 128,914,397.90 is: 193,371,596.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,370.70 : 209,952,556.05 = 128,914,397.90 : x
  2. Step 2: Convert to fraction form
    139,968,370.70/209,952,556.05 = 128,914,397.90/x
  3. Step 3: Cross multiply
    139,968,370.70x = 209,952,556.05 × 128,914,397.90
  4. Step 4: Simplify right side
    139,968,370.70x = 27,065,907,350,751,756
  5. Step 5: Solve for x
    x = 27,065,907,350,751,756/139,968,370.70
  6. Step 6: Final answer
    x = 193,371,596.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.