Finding the Fourth Proportional to 115,979.40, 160,048.86 and 68,235.82
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Solution
The fourth proportional to 115,979.40, 160,048.86 and 68,235.82 is: 94,163.84
Step by Step Solution
- Step 1: Write the proportion equation
115,979.40 : 160,048.86 = 68,235.82 : x - Step 2: Convert to fraction form
115,979.40/160,048.86 = 68,235.82/x - Step 3: Cross multiply
115,979.40x = 160,048.86 × 68,235.82 - Step 4: Simplify right side
115,979.40x = 10,921,065,202.17 - Step 5: Solve for x
x = 10,921,065,202.17/115,979.40 - Step 6: Final answer
x = 94,163.84
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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.