Finding the Fourth Proportional to 121,170.40, 181,763.70 and 41,207.20
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Solution
The fourth proportional to 121,170.40, 181,763.70 and 41,207.20 is: 61,813.55
Step by Step Solution
- Step 1: Write the proportion equation
121,170.40 : 181,763.70 = 41,207.20 : x - Step 2: Convert to fraction form
121,170.40/181,763.70 = 41,207.20/x - Step 3: Cross multiply
121,170.40x = 181,763.70 × 41,207.20 - Step 4: Simplify right side
121,170.40x = 7,489,973,138.64 - Step 5: Solve for x
x = 7,489,973,138.64/121,170.40 - Step 6: Final answer
x = 61,813.55
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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.