Finding the Fourth Proportional to 100,619.36, 138,845.70 and 55,296.82
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Solution
The fourth proportional to 100,619.36, 138,845.70 and 55,296.82 is: 76,304.66
Step by Step Solution
- Step 1: Write the proportion equation
100,619.36 : 138,845.70 = 55,296.82 : x - Step 2: Convert to fraction form
100,619.36/138,845.70 = 55,296.82/x - Step 3: Cross multiply
100,619.36x = 138,845.70 × 55,296.82 - Step 4: Simplify right side
100,619.36x = 7,677,725,680.67 - Step 5: Solve for x
x = 7,677,725,680.67/100,619.36 - Step 6: Final answer
x = 76,304.66
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.