Finding the Fourth Proportional to 158,269.38, 218,403.45 and 86,635.68
Calculator
Solution
The fourth proportional to 158,269.38, 218,403.45 and 86,635.68 is: 119,552.70
Step by Step Solution
- Step 1: Write the proportion equation
158,269.38 : 218,403.45 = 86,635.68 : x - Step 2: Convert to fraction form
158,269.38/218,403.45 = 86,635.68/x - Step 3: Cross multiply
158,269.38x = 218,403.45 × 86,635.68 - Step 4: Simplify right side
158,269.38x = 18,921,531,405.10 - Step 5: Solve for x
x = 18,921,531,405.10/158,269.38 - Step 6: Final answer
x = 119,552.70
Related Problems
Find fourth proportional to 79,134.69, 109,201.73 and 43,317.84
Half scale
Find fourth proportional to 316,538.76, 436,806.90 and 173,271.36
Double scale
Find fourth proportional to 158,270.38, 218,404.83 and 86,636.68
Similar ratio
Find fourth proportional to 237,404.07, 327,605.18 and 129,953.52
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.