Finding the Fourth Proportional to 118,163.81, 163,202.09 and 86,042.05
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Solution
The fourth proportional to 118,163.81, 163,202.09 and 86,042.05 is: 118,837.08
Step by Step Solution
- Step 1: Write the proportion equation
118,163.81 : 163,202.09 = 86,042.05 : x - Step 2: Convert to fraction form
118,163.81/163,202.09 = 86,042.05/x - Step 3: Cross multiply
118,163.81x = 163,202.09 × 86,042.05 - Step 4: Simplify right side
118,163.81x = 14,042,242,033.66 - Step 5: Solve for x
x = 14,042,242,033.66/118,163.81 - Step 6: Final answer
x = 118,837.08
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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.