Finding the Fourth Proportional to 114,709.19, 158,431.19 and 76,405.68
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Solution
The fourth proportional to 114,709.19, 158,431.19 and 76,405.68 is: 105,528.10
Step by Step Solution
- Step 1: Write the proportion equation
114,709.19 : 158,431.19 = 76,405.68 : x - Step 2: Convert to fraction form
114,709.19/158,431.19 = 76,405.68/x - Step 3: Cross multiply
114,709.19x = 158,431.19 × 76,405.68 - Step 4: Simplify right side
114,709.19x = 12,105,042,423.13 - Step 5: Solve for x
x = 12,105,042,423.13/114,709.19 - Step 6: Final answer
x = 105,528.10
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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.