Finding the Fourth Proportional to 112,215.40, 154,717.19 and 71,862.82
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Solution
The fourth proportional to 112,215.40, 154,717.19 and 71,862.82 is: 99,080.99
Step by Step Solution
- Step 1: Write the proportion equation
112,215.40 : 154,717.19 = 71,862.82 : x - Step 2: Convert to fraction form
112,215.40/154,717.19 = 71,862.82/x - Step 3: Cross multiply
112,215.40x = 154,717.19 × 71,862.82 - Step 4: Simplify right side
112,215.40x = 11,118,413,409.96 - Step 5: Solve for x
x = 11,118,413,409.96/112,215.40 - Step 6: Final answer
x = 99,080.99
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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.