Finding the Fourth Proportional to 154,185.24, 212,811.12 and 100,376.49
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Solution
The fourth proportional to 154,185.24, 212,811.12 and 100,376.49 is: 138,542.66
Step by Step Solution
- Step 1: Write the proportion equation
154,185.24 : 212,811.12 = 100,376.49 : x - Step 2: Convert to fraction form
154,185.24/212,811.12 = 100,376.49/x - Step 3: Cross multiply
154,185.24x = 212,811.12 × 100,376.49 - Step 4: Simplify right side
154,185.24x = 21,361,233,258.57 - Step 5: Solve for x
x = 21,361,233,258.57/154,185.24 - Step 6: Final answer
x = 138,542.66
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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.