Finding the Fourth Proportional to 121,918.58, 168,243.73 and 68,202.44
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Solution
The fourth proportional to 121,918.58, 168,243.73 and 68,202.44 is: 94,117.17
Step by Step Solution
- Step 1: Write the proportion equation
121,918.58 : 168,243.73 = 68,202.44 : x - Step 2: Convert to fraction form
121,918.58/168,243.73 = 68,202.44/x - Step 3: Cross multiply
121,918.58x = 168,243.73 × 68,202.44 - Step 4: Simplify right side
121,918.58x = 11,474,631,718.47 - Step 5: Solve for x
x = 11,474,631,718.47/121,918.58 - Step 6: Final answer
x = 94,117.17
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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.