Finding the Fourth Proportional to 121,403.28, 167,452.74 and 80,559.84
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Solution
The fourth proportional to 121,403.28, 167,452.74 and 80,559.84 is: 111,116.98
Step by Step Solution
- Step 1: Write the proportion equation
121,403.28 : 167,452.74 = 80,559.84 : x - Step 2: Convert to fraction form
121,403.28/167,452.74 = 80,559.84/x - Step 3: Cross multiply
121,403.28x = 167,452.74 × 80,559.84 - Step 4: Simplify right side
121,403.28x = 13,489,965,941.96 - Step 5: Solve for x
x = 13,489,965,941.96/121,403.28 - Step 6: Final answer
x = 111,116.98
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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.