Home / 91,907,042.20-137,718,845.70-79,719,328.60

Finding the Fourth Proportional to 91,907,042.20, 137,718,845.70 and 79,719,328.60

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Solution

The fourth proportional to 91,907,042.20, 137,718,845.70 and 79,719,328.60 is: 119,456,068.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,907,042.20 : 137,718,845.70 = 79,719,328.60 : x
  2. Step 2: Convert to fraction form
    91,907,042.20/137,718,845.70 = 79,719,328.60/x
  3. Step 3: Cross multiply
    91,907,042.20x = 137,718,845.70 × 79,719,328.60
  4. Step 4: Simplify right side
    91,907,042.20x = 10,978,853,914,770,996
  5. Step 5: Solve for x
    x = 10,978,853,914,770,996/91,907,042.20
  6. Step 6: Final answer
    x = 119,456,068.35

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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.