Finding the Fourth Proportional to 159,361.20, 219,955.80 and 91,376.94
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Solution
The fourth proportional to 159,361.20, 219,955.80 and 91,376.94 is: 126,121.59
Step by Step Solution
- Step 1: Write the proportion equation
159,361.20 : 219,955.80 = 91,376.94 : x - Step 2: Convert to fraction form
159,361.20/219,955.80 = 91,376.94/x - Step 3: Cross multiply
159,361.20x = 219,955.80 × 91,376.94 - Step 4: Simplify right side
159,361.20x = 20,098,887,939.25 - Step 5: Solve for x
x = 20,098,887,939.25/159,361.20 - Step 6: Final answer
x = 126,121.59
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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.