Finding the Fourth Proportional to 121,858.99, 167,791.56 and 106,666.63
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Solution
The fourth proportional to 121,858.99, 167,791.56 and 106,666.63 is: 146,872.71
Step by Step Solution
- Step 1: Write the proportion equation
121,858.99 : 167,791.56 = 106,666.63 : x - Step 2: Convert to fraction form
121,858.99/167,791.56 = 106,666.63/x - Step 3: Cross multiply
121,858.99x = 167,791.56 × 106,666.63 - Step 4: Simplify right side
121,858.99x = 17,897,760,247.64 - Step 5: Solve for x
x = 17,897,760,247.64/121,858.99 - Step 6: Final answer
x = 146,872.71
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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.