Finding the Fourth Proportional to 111,639.66, 154,062.09 and 60,651.99
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Solution
The fourth proportional to 111,639.66, 154,062.09 and 60,651.99 is: 83,699.40
Step by Step Solution
- Step 1: Write the proportion equation
111,639.66 : 154,062.09 = 60,651.99 : x - Step 2: Convert to fraction form
111,639.66/154,062.09 = 60,651.99/x - Step 3: Cross multiply
111,639.66x = 154,062.09 × 60,651.99 - Step 4: Simplify right side
111,639.66x = 9,344,172,342.06 - Step 5: Solve for x
x = 9,344,172,342.06/111,639.66 - Step 6: Final answer
x = 83,699.40
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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.