Finding the Fourth Proportional to 121,324.80, 181,987.20 and 116,659.20
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Solution
The fourth proportional to 121,324.80, 181,987.20 and 116,659.20 is: 174,988.80
Step by Step Solution
- Step 1: Write the proportion equation
121,324.80 : 181,987.20 = 116,659.20 : x - Step 2: Convert to fraction form
121,324.80/181,987.20 = 116,659.20/x - Step 3: Cross multiply
121,324.80x = 181,987.20 × 116,659.20 - Step 4: Simplify right side
121,324.80x = 21,230,481,162.24 - Step 5: Solve for x
x = 21,230,481,162.24/121,324.80 - Step 6: Final answer
x = 174,988.80
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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.