Finding the Fourth Proportional to 120,193.93, 165,853.06 and 66,471.63
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Solution
The fourth proportional to 120,193.93, 165,853.06 and 66,471.63 is: 91,722.80
Step by Step Solution
- Step 1: Write the proportion equation
120,193.93 : 165,853.06 = 66,471.63 : x - Step 2: Convert to fraction form
120,193.93/165,853.06 = 66,471.63/x - Step 3: Cross multiply
120,193.93x = 165,853.06 × 66,471.63 - Step 4: Simplify right side
120,193.93x = 11,024,523,238.69 - Step 5: Solve for x
x = 11,024,523,238.69/120,193.93 - Step 6: Final answer
x = 91,722.80
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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.