Finding the Fourth Proportional to 120,715.97, 181,077.80 and 57,542.99
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Solution
The fourth proportional to 120,715.97, 181,077.80 and 57,542.99 is: 86,316.31
Step by Step Solution
- Step 1: Write the proportion equation
120,715.97 : 181,077.80 = 57,542.99 : x - Step 2: Convert to fraction form
120,715.97/181,077.80 = 57,542.99/x - Step 3: Cross multiply
120,715.97x = 181,077.80 × 57,542.99 - Step 4: Simplify right side
120,715.97x = 10,419,756,841.52 - Step 5: Solve for x
x = 10,419,756,841.52/120,715.97 - Step 6: Final answer
x = 86,316.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.