Finding the Fourth Proportional to 125,938.81, 188,907.99 and 86,375.98
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Solution
The fourth proportional to 125,938.81, 188,907.99 and 86,375.98 is: 129,563.82
Step by Step Solution
- Step 1: Write the proportion equation
125,938.81 : 188,907.99 = 86,375.98 : x - Step 2: Convert to fraction form
125,938.81/188,907.99 = 86,375.98/x - Step 3: Cross multiply
125,938.81x = 188,907.99 × 86,375.98 - Step 4: Simplify right side
125,938.81x = 16,317,112,766.08 - Step 5: Solve for x
x = 16,317,112,766.08/125,938.81 - Step 6: Final answer
x = 129,563.82
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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.