Finding the Fourth Proportional to 121,152.16, 181,668.03 and 76,745.26
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Solution
The fourth proportional to 121,152.16, 181,668.03 and 76,745.26 is: 115,079.75
Step by Step Solution
- Step 1: Write the proportion equation
121,152.16 : 181,668.03 = 76,745.26 : x - Step 2: Convert to fraction form
121,152.16/181,668.03 = 76,745.26/x - Step 3: Cross multiply
121,152.16x = 181,668.03 × 76,745.26 - Step 4: Simplify right side
121,152.16x = 13,942,160,196.04 - Step 5: Solve for x
x = 13,942,160,196.04/121,152.16 - Step 6: Final answer
x = 115,079.75
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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.