Finding the Fourth Proportional to 125,090.14, 172,651.18 and 79,757.68
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Solution
The fourth proportional to 125,090.14, 172,651.18 and 79,757.68 is: 110,082.68
Step by Step Solution
- Step 1: Write the proportion equation
125,090.14 : 172,651.18 = 79,757.68 : x - Step 2: Convert to fraction form
125,090.14/172,651.18 = 79,757.68/x - Step 3: Cross multiply
125,090.14x = 172,651.18 × 79,757.68 - Step 4: Simplify right side
125,090.14x = 13,770,257,566.06 - Step 5: Solve for x
x = 13,770,257,566.06/125,090.14 - Step 6: Final answer
x = 110,082.68
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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.