Finding the Fourth Proportional to 79,358.20, 118,907.70 and 68,212.60
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Solution
The fourth proportional to 79,358.20, 118,907.70 and 68,212.60 is: 102,207.50
Step by Step Solution
- Step 1: Write the proportion equation
79,358.20 : 118,907.70 = 68,212.60 : x - Step 2: Convert to fraction form
79,358.20/118,907.70 = 68,212.60/x - Step 3: Cross multiply
79,358.20x = 118,907.70 × 68,212.60 - Step 4: Simplify right side
79,358.20x = 8,111,003,377.02 - Step 5: Solve for x
x = 8,111,003,377.02/79,358.20 - Step 6: Final answer
x = 102,207.50
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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.