Finding the Fourth Proportional to 128,844.60, 193,412.70 and 76,283.70
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Solution
The fourth proportional to 128,844.60, 193,412.70 and 76,283.70 is: 114,511.87
Step by Step Solution
- Step 1: Write the proportion equation
128,844.60 : 193,412.70 = 76,283.70 : x - Step 2: Convert to fraction form
128,844.60/193,412.70 = 76,283.70/x - Step 3: Cross multiply
128,844.60x = 193,412.70 × 76,283.70 - Step 4: Simplify right side
128,844.60x = 14,754,236,382.99 - Step 5: Solve for x
x = 14,754,236,382.99/128,844.60 - Step 6: Final answer
x = 114,511.87
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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.