Finding the Fourth Proportional to 190,855.80, 286,283.70 and 85,879.80
Calculator
Solution
The fourth proportional to 190,855.80, 286,283.70 and 85,879.80 is: 128,819.70
Step by Step Solution
- Step 1: Write the proportion equation
190,855.80 : 286,283.70 = 85,879.80 : x - Step 2: Convert to fraction form
190,855.80/286,283.70 = 85,879.80/x - Step 3: Cross multiply
190,855.80x = 286,283.70 × 85,879.80 - Step 4: Simplify right side
190,855.80x = 24,585,986,899.26 - Step 5: Solve for x
x = 24,585,986,899.26/190,855.80 - Step 6: Final answer
x = 128,819.70
Related Problems
Find fourth proportional to 95,427.90, 143,141.85 and 42,939.90
Half scale
Find fourth proportional to 381,711.60, 572,567.40 and 171,759.60
Double scale
Find fourth proportional to 190,856.80, 286,285.20 and 85,880.80
Similar ratio
Find fourth proportional to 286,283.70, 429,425.55 and 128,819.70
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.