Finding the Fourth Proportional to 122,918.18, 169,643.24 and 69,213.66
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Solution
The fourth proportional to 122,918.18, 169,643.24 and 69,213.66 is: 95,523.95
Step by Step Solution
- Step 1: Write the proportion equation
122,918.18 : 169,643.24 = 69,213.66 : x - Step 2: Convert to fraction form
122,918.18/169,643.24 = 69,213.66/x - Step 3: Cross multiply
122,918.18x = 169,643.24 × 69,213.66 - Step 4: Simplify right side
122,918.18x = 11,741,629,534.66 - Step 5: Solve for x
x = 11,741,629,534.66/122,918.18 - Step 6: Final answer
x = 95,523.95
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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.