Finding the Fourth Proportional to 163,936.60, 246,135.30 and 128,915.80
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Solution
The fourth proportional to 163,936.60, 246,135.30 and 128,915.80 is: 193,554.88
Step by Step Solution
- Step 1: Write the proportion equation
163,936.60 : 246,135.30 = 128,915.80 : x - Step 2: Convert to fraction form
163,936.60/246,135.30 = 128,915.80/x - Step 3: Cross multiply
163,936.60x = 246,135.30 × 128,915.80 - Step 4: Simplify right side
163,936.60x = 31,730,729,107.74 - Step 5: Solve for x
x = 31,730,729,107.74/163,936.60 - Step 6: Final answer
x = 193,554.88
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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.