Finding the Fourth Proportional to 154,436.40, 213,106.68 and 86,448.96
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Solution
The fourth proportional to 154,436.40, 213,106.68 and 86,448.96 is: 119,290.86
Step by Step Solution
- Step 1: Write the proportion equation
154,436.40 : 213,106.68 = 86,448.96 : x - Step 2: Convert to fraction form
154,436.40/213,106.68 = 86,448.96/x - Step 3: Cross multiply
154,436.40x = 213,106.68 × 86,448.96 - Step 4: Simplify right side
154,436.40x = 18,422,850,855.05 - Step 5: Solve for x
x = 18,422,850,855.05/154,436.40 - Step 6: Final answer
x = 119,290.86
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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.