Finding the Fourth Proportional to 121,422.63, 167,563.23 and 71,121.63
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Solution
The fourth proportional to 121,422.63, 167,563.23 and 71,121.63 is: 98,147.85
Step by Step Solution
- Step 1: Write the proportion equation
121,422.63 : 167,563.23 = 71,121.63 : x - Step 2: Convert to fraction form
121,422.63/167,563.23 = 71,121.63/x - Step 3: Cross multiply
121,422.63x = 167,563.23 × 71,121.63 - Step 4: Simplify right side
121,422.63x = 11,917,370,045.66 - Step 5: Solve for x
x = 11,917,370,045.66/121,422.63 - Step 6: Final answer
x = 98,147.85
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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.