Finding the Fourth Proportional to 126,743.40, 190,115.10 and 76,879.80
Calculator
Solution
The fourth proportional to 126,743.40, 190,115.10 and 76,879.80 is: 115,319.70
Step by Step Solution
- Step 1: Write the proportion equation
126,743.40 : 190,115.10 = 76,879.80 : x - Step 2: Convert to fraction form
126,743.40/190,115.10 = 76,879.80/x - Step 3: Cross multiply
126,743.40x = 190,115.10 × 76,879.80 - Step 4: Simplify right side
126,743.40x = 14,616,010,864.98 - Step 5: Solve for x
x = 14,616,010,864.98/126,743.40 - Step 6: Final answer
x = 115,319.70
Related Problems
Find fourth proportional to 63,371.70, 95,057.55 and 38,439.90
Half scale
Find fourth proportional to 253,486.80, 380,230.20 and 153,759.60
Double scale
Find fourth proportional to 126,744.40, 190,116.60 and 76,880.80
Similar ratio
Find fourth proportional to 190,115.10, 285,172.65 and 115,319.70
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.