Finding the Fourth Proportional to 131,538.12, 181,669.14 and 121,584.84
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Solution
The fourth proportional to 131,538.12, 181,669.14 and 121,584.84 is: 167,922.53
Step by Step Solution
- Step 1: Write the proportion equation
131,538.12 : 181,669.14 = 121,584.84 : x - Step 2: Convert to fraction form
131,538.12/181,669.14 = 121,584.84/x - Step 3: Cross multiply
131,538.12x = 181,669.14 × 121,584.84 - Step 4: Simplify right side
131,538.12x = 22,088,213,319.84 - Step 5: Solve for x
x = 22,088,213,319.84/131,538.12 - Step 6: Final answer
x = 167,922.53
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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.