Finding the Fourth Proportional to 103,959.30, 155,549.70 and 74,042.70
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Solution
The fourth proportional to 103,959.30, 155,549.70 and 74,042.70 is: 110,786.82
Step by Step Solution
- Step 1: Write the proportion equation
103,959.30 : 155,549.70 = 74,042.70 : x - Step 2: Convert to fraction form
103,959.30/155,549.70 = 74,042.70/x - Step 3: Cross multiply
103,959.30x = 155,549.70 × 74,042.70 - Step 4: Simplify right side
103,959.30x = 11,517,319,772.19 - Step 5: Solve for x
x = 11,517,319,772.19/103,959.30 - Step 6: Final answer
x = 110,786.82
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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.