Finding the Fourth Proportional to 158,478.13, 218,309.20 and 135,743.05
Calculator
Solution
The fourth proportional to 158,478.13, 218,309.20 and 135,743.05 is: 186,990.83
Step by Step Solution
- Step 1: Write the proportion equation
158,478.13 : 218,309.20 = 135,743.05 : x - Step 2: Convert to fraction form
158,478.13/218,309.20 = 135,743.05/x - Step 3: Cross multiply
158,478.13x = 218,309.20 × 135,743.05 - Step 4: Simplify right side
158,478.13x = 29,633,956,651.06 - Step 5: Solve for x
x = 29,633,956,651.06/158,478.13 - Step 6: Final answer
x = 186,990.83
Related Problems
Find fourth proportional to 79,239.07, 109,154.60 and 67,871.53
Half scale
Find fourth proportional to 316,956.26, 436,618.40 and 271,486.10
Double scale
Find fourth proportional to 158,479.13, 218,310.58 and 135,744.05
Similar ratio
Find fourth proportional to 237,717.20, 327,463.80 and 203,614.58
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.