Finding the Fourth Proportional to 112,291.20, 168,436.80 and 76,861.80
Calculator
Solution
The fourth proportional to 112,291.20, 168,436.80 and 76,861.80 is: 115,292.70
Step by Step Solution
- Step 1: Write the proportion equation
112,291.20 : 168,436.80 = 76,861.80 : x - Step 2: Convert to fraction form
112,291.20/168,436.80 = 76,861.80/x - Step 3: Cross multiply
112,291.20x = 168,436.80 × 76,861.80 - Step 4: Simplify right side
112,291.20x = 12,946,355,634.24 - Step 5: Solve for x
x = 12,946,355,634.24/112,291.20 - Step 6: Final answer
x = 115,292.70
Related Problems
Find fourth proportional to 56,145.60, 84,218.40 and 38,430.90
Half scale
Find fourth proportional to 224,582.40, 336,873.60 and 153,723.60
Double scale
Find fourth proportional to 112,292.20, 168,438.30 and 76,862.80
Similar ratio
Find fourth proportional to 168,436.80, 252,655.20 and 115,292.70
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.