Finding the Fourth Proportional to 127,245.80, 190,868.70 and 121,413.80
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Solution
The fourth proportional to 127,245.80, 190,868.70 and 121,413.80 is: 182,120.70
Step by Step Solution
- Step 1: Write the proportion equation
127,245.80 : 190,868.70 = 121,413.80 : x - Step 2: Convert to fraction form
127,245.80/190,868.70 = 121,413.80/x - Step 3: Cross multiply
127,245.80x = 190,868.70 × 121,413.80 - Step 4: Simplify right side
127,245.80x = 23,174,094,168.06 - Step 5: Solve for x
x = 23,174,094,168.06/127,245.80 - Step 6: Final answer
x = 182,120.70
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1.5x scale
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.