Finding the Fourth Proportional to 231,166.12, 319,005.06 and 129,193.48
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Solution
The fourth proportional to 231,166.12, 319,005.06 and 129,193.48 is: 178,284.66
Step by Step Solution
- Step 1: Write the proportion equation
231,166.12 : 319,005.06 = 129,193.48 : x - Step 2: Convert to fraction form
231,166.12/319,005.06 = 129,193.48/x - Step 3: Cross multiply
231,166.12x = 319,005.06 × 129,193.48 - Step 4: Simplify right side
231,166.12x = 41,213,373,839.01 - Step 5: Solve for x
x = 41,213,373,839.01/231,166.12 - Step 6: Final answer
x = 178,284.66
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1.5x scale
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.