Finding the Fourth Proportional to 109,306.13, 150,908.06 and 71,645.99
Calculator
Solution
The fourth proportional to 109,306.13, 150,908.06 and 71,645.99 is: 98,914.46
Step by Step Solution
- Step 1: Write the proportion equation
109,306.13 : 150,908.06 = 71,645.99 : x - Step 2: Convert to fraction form
109,306.13/150,908.06 = 71,645.99/x - Step 3: Cross multiply
109,306.13x = 150,908.06 × 71,645.99 - Step 4: Simplify right side
109,306.13x = 10,811,956,782.25 - Step 5: Solve for x
x = 10,811,956,782.25/109,306.13 - Step 6: Final answer
x = 98,914.46
Related Problems
Find fourth proportional to 54,653.06, 75,454.03 and 35,822.99
Half scale
Find fourth proportional to 218,612.25, 301,816.13 and 143,291.97
Double scale
Find fourth proportional to 109,307.13, 150,909.44 and 71,646.99
Similar ratio
Find fourth proportional to 163,959.19, 226,362.09 and 107,468.98
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.