Finding the Fourth Proportional to 186,321.23, 257,121.67 and 101,438.09
Calculator
Solution
The fourth proportional to 186,321.23, 257,121.67 and 101,438.09 is: 139,983.68
Step by Step Solution
- Step 1: Write the proportion equation
186,321.23 : 257,121.67 = 101,438.09 : x - Step 2: Convert to fraction form
186,321.23/257,121.67 = 101,438.09/x - Step 3: Cross multiply
186,321.23x = 257,121.67 × 101,438.09 - Step 4: Simplify right side
186,321.23x = 26,081,931,102.41 - Step 5: Solve for x
x = 26,081,931,102.41/186,321.23 - Step 6: Final answer
x = 139,983.68
Related Problems
Find fourth proportional to 93,160.62, 128,560.84 and 50,719.05
Half scale
Find fourth proportional to 372,642.46, 514,243.34 and 202,876.18
Double scale
Find fourth proportional to 186,322.23, 257,123.05 and 101,439.09
Similar ratio
Find fourth proportional to 279,481.85, 385,682.51 and 152,157.14
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.