Finding the Fourth Proportional to 121,585.26, 167,779.58 and 76,261.26
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Solution
The fourth proportional to 121,585.26, 167,779.58 and 76,261.26 is: 105,235.47
Step by Step Solution
- Step 1: Write the proportion equation
121,585.26 : 167,779.58 = 76,261.26 : x - Step 2: Convert to fraction form
121,585.26/167,779.58 = 76,261.26/x - Step 3: Cross multiply
121,585.26x = 167,779.58 × 76,261.26 - Step 4: Simplify right side
121,585.26x = 12,795,082,173.07 - Step 5: Solve for x
x = 12,795,082,173.07/121,585.26 - Step 6: Final answer
x = 105,235.47
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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.