Finding the Fourth Proportional to 128,797.68, 193,047.21 and 48,784.80
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Solution
The fourth proportional to 128,797.68, 193,047.21 and 48,784.80 is: 73,120.65
Step by Step Solution
- Step 1: Write the proportion equation
128,797.68 : 193,047.21 = 48,784.80 : x - Step 2: Convert to fraction form
128,797.68/193,047.21 = 48,784.80/x - Step 3: Cross multiply
128,797.68x = 193,047.21 × 48,784.80 - Step 4: Simplify right side
128,797.68x = 9,417,769,530.41 - Step 5: Solve for x
x = 9,417,769,530.41/128,797.68 - Step 6: Final answer
x = 73,120.65
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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.