Finding the Fourth Proportional to 113,137.85, 156,112.90 and 65,381.99
Calculator
Solution
The fourth proportional to 113,137.85, 156,112.90 and 65,381.99 is: 90,217.12
Step by Step Solution
- Step 1: Write the proportion equation
113,137.85 : 156,112.90 = 65,381.99 : x - Step 2: Convert to fraction form
113,137.85/156,112.90 = 65,381.99/x - Step 3: Cross multiply
113,137.85x = 156,112.90 × 65,381.99 - Step 4: Simplify right side
113,137.85x = 10,206,971,122.65 - Step 5: Solve for x
x = 10,206,971,122.65/113,137.85 - Step 6: Final answer
x = 90,217.12
Related Problems
Find fourth proportional to 56,568.93, 78,056.45 and 32,690.99
Half scale
Find fourth proportional to 226,275.71, 312,225.80 and 130,763.97
Double scale
Find fourth proportional to 113,138.85, 156,114.28 and 65,382.99
Similar ratio
Find fourth proportional to 169,706.78, 234,169.35 and 98,072.98
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.