Finding the Fourth Proportional to 121,569.19, 167,784.92 and 71,268.19
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Solution
The fourth proportional to 121,569.19, 167,784.92 and 71,268.19 is: 98,361.50
Step by Step Solution
- Step 1: Write the proportion equation
121,569.19 : 167,784.92 = 71,268.19 : x - Step 2: Convert to fraction form
121,569.19/167,784.92 = 71,268.19/x - Step 3: Cross multiply
121,569.19x = 167,784.92 × 71,268.19 - Step 4: Simplify right side
121,569.19x = 11,957,727,049.15 - Step 5: Solve for x
x = 11,957,727,049.15/121,569.19 - Step 6: Final answer
x = 98,361.50
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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.