Finding the Fourth Proportional to 154,179.21, 212,802.84 and 100,370.49
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Solution
The fourth proportional to 154,179.21, 212,802.84 and 100,370.49 is: 138,534.41
Step by Step Solution
- Step 1: Write the proportion equation
154,179.21 : 212,802.84 = 100,370.49 : x - Step 2: Convert to fraction form
154,179.21/212,802.84 = 100,370.49/x - Step 3: Cross multiply
154,179.21x = 212,802.84 × 100,370.49 - Step 4: Simplify right side
154,179.21x = 21,359,125,324.19 - Step 5: Solve for x
x = 21,359,125,324.19/154,179.21 - Step 6: Final answer
x = 138,534.41
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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.