Finding the Fourth Proportional to 122,109.81, 168,514.83 and 68,393.66
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Solution
The fourth proportional to 122,109.81, 168,514.83 and 68,393.66 is: 94,385.09
Step by Step Solution
- Step 1: Write the proportion equation
122,109.81 : 168,514.83 = 68,393.66 : x - Step 2: Convert to fraction form
122,109.81/168,514.83 = 68,393.66/x - Step 3: Cross multiply
122,109.81x = 168,514.83 × 68,393.66 - Step 4: Simplify right side
122,109.81x = 11,525,345,145.40 - Step 5: Solve for x
x = 11,525,345,145.40/122,109.81 - Step 6: Final answer
x = 94,385.09
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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.