Finding the Fourth Proportional to 128,976.80, 193,378.80 and 62,448.80
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Solution
The fourth proportional to 128,976.80, 193,378.80 and 62,448.80 is: 93,631.37
Step by Step Solution
- Step 1: Write the proportion equation
128,976.80 : 193,378.80 = 62,448.80 : x - Step 2: Convert to fraction form
128,976.80/193,378.80 = 62,448.80/x - Step 3: Cross multiply
128,976.80x = 193,378.80 × 62,448.80 - Step 4: Simplify right side
128,976.80x = 12,076,274,005.44 - Step 5: Solve for x
x = 12,076,274,005.44/128,976.80 - Step 6: Final answer
x = 93,631.37
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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.