Finding the Fourth Proportional to 121,347.19, 167,456.92 and 66,157.03
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Solution
The fourth proportional to 121,347.19, 167,456.92 and 66,157.03 is: 91,295.50
Step by Step Solution
- Step 1: Write the proportion equation
121,347.19 : 167,456.92 = 66,157.03 : x - Step 2: Convert to fraction form
121,347.19/167,456.92 = 66,157.03/x - Step 3: Cross multiply
121,347.19x = 167,456.92 × 66,157.03 - Step 4: Simplify right side
121,347.19x = 11,078,452,480.15 - Step 5: Solve for x
x = 11,078,452,480.15/121,347.19 - Step 6: Final answer
x = 91,295.50
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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.