Finding the Fourth Proportional to 110,236.20, 165,062.70 and 86,713.80
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Solution
The fourth proportional to 110,236.20, 165,062.70 and 86,713.80 is: 129,841.32
Step by Step Solution
- Step 1: Write the proportion equation
110,236.20 : 165,062.70 = 86,713.80 : x - Step 2: Convert to fraction form
110,236.20/165,062.70 = 86,713.80/x - Step 3: Cross multiply
110,236.20x = 165,062.70 × 86,713.80 - Step 4: Simplify right side
110,236.20x = 14,313,213,955.26 - Step 5: Solve for x
x = 14,313,213,955.26/110,236.20 - Step 6: Final answer
x = 129,841.32
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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.