Finding the Fourth Proportional to 168,070.21, 231,933.92 and 91,589.99
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Solution
The fourth proportional to 168,070.21, 231,933.92 and 91,589.99 is: 126,392.57
Step by Step Solution
- Step 1: Write the proportion equation
168,070.21 : 231,933.92 = 91,589.99 : x - Step 2: Convert to fraction form
168,070.21/231,933.92 = 91,589.99/x - Step 3: Cross multiply
168,070.21x = 231,933.92 × 91,589.99 - Step 4: Simplify right side
168,070.21x = 21,242,824,955.51 - Step 5: Solve for x
x = 21,242,824,955.51/168,070.21 - Step 6: Final answer
x = 126,392.57
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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.