Finding the Fourth Proportional to 119,331.12, 178,884.88 and 40,390.08
Calculator
Solution
The fourth proportional to 119,331.12, 178,884.88 and 40,390.08 is: 60,547.28
Step by Step Solution
- Step 1: Write the proportion equation
119,331.12 : 178,884.88 = 40,390.08 : x - Step 2: Convert to fraction form
119,331.12/178,884.88 = 40,390.08/x - Step 3: Cross multiply
119,331.12x = 178,884.88 × 40,390.08 - Step 4: Simplify right side
119,331.12x = 7,225,174,613.99 - Step 5: Solve for x
x = 7,225,174,613.99/119,331.12 - Step 6: Final answer
x = 60,547.28
Related Problems
Find fourth proportional to 59,665.56, 89,442.44 and 20,195.04
Half scale
Find fourth proportional to 238,662.24, 357,769.76 and 80,780.16
Double scale
Find fourth proportional to 119,332.12, 178,886.38 and 40,391.08
Similar ratio
Find fourth proportional to 178,996.68, 268,327.32 and 60,585.12
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.