Finding the Fourth Proportional to 154,203.36, 212,859.36 and 100,501.44
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Solution
The fourth proportional to 154,203.36, 212,859.36 and 100,501.44 is: 138,730.26
Step by Step Solution
- Step 1: Write the proportion equation
154,203.36 : 212,859.36 = 100,501.44 : x - Step 2: Convert to fraction form
154,203.36/212,859.36 = 100,501.44/x - Step 3: Cross multiply
154,203.36x = 212,859.36 × 100,501.44 - Step 4: Simplify right side
154,203.36x = 21,392,672,197.48 - Step 5: Solve for x
x = 21,392,672,197.48/154,203.36 - Step 6: Final answer
x = 138,730.26
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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.