Finding the Fourth Proportional to 126,643.24, 189,859.74 and 47,713.96
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Solution
The fourth proportional to 126,643.24, 189,859.74 and 47,713.96 is: 71,531.34
Step by Step Solution
- Step 1: Write the proportion equation
126,643.24 : 189,859.74 = 47,713.96 : x - Step 2: Convert to fraction form
126,643.24/189,859.74 = 47,713.96/x - Step 3: Cross multiply
126,643.24x = 189,859.74 × 47,713.96 - Step 4: Simplify right side
126,643.24x = 9,058,960,039.97 - Step 5: Solve for x
x = 9,058,960,039.97/126,643.24 - Step 6: Final answer
x = 71,531.34
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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.