Finding the Fourth Proportional to 105,638.49, 158,351.09 and 66,223.26
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Solution
The fourth proportional to 105,638.49, 158,351.09 and 66,223.26 is: 99,268.03
Step by Step Solution
- Step 1: Write the proportion equation
105,638.49 : 158,351.09 = 66,223.26 : x - Step 2: Convert to fraction form
105,638.49/158,351.09 = 66,223.26/x - Step 3: Cross multiply
105,638.49x = 158,351.09 × 66,223.26 - Step 4: Simplify right side
105,638.49x = 10,486,525,073.24 - Step 5: Solve for x
x = 10,486,525,073.24/105,638.49 - Step 6: Final answer
x = 99,268.03
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.