Finding the Fourth Proportional to 118,413.70, 177,620.55 and 90,765.70
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Solution
The fourth proportional to 118,413.70, 177,620.55 and 90,765.70 is: 136,148.55
Step by Step Solution
- Step 1: Write the proportion equation
118,413.70 : 177,620.55 = 90,765.70 : x - Step 2: Convert to fraction form
118,413.70/177,620.55 = 90,765.70/x - Step 3: Cross multiply
118,413.70x = 177,620.55 × 90,765.70 - Step 4: Simplify right side
118,413.70x = 16,121,853,555.14 - Step 5: Solve for x
x = 16,121,853,555.14/118,413.70 - Step 6: Final answer
x = 136,148.55
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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.