Finding the Fourth Proportional to 120,699.23, 181,038.21 and 54,121.49
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Solution
The fourth proportional to 120,699.23, 181,038.21 and 54,121.49 is: 81,177.47
Step by Step Solution
- Step 1: Write the proportion equation
120,699.23 : 181,038.21 = 54,121.49 : x - Step 2: Convert to fraction form
120,699.23/181,038.21 = 54,121.49/x - Step 3: Cross multiply
120,699.23x = 181,038.21 × 54,121.49 - Step 4: Simplify right side
120,699.23x = 9,798,057,672.13 - Step 5: Solve for x
x = 9,798,057,672.13/120,699.23 - Step 6: Final answer
x = 81,177.47
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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.