Finding the Fourth Proportional to 128,907.16, 193,360.72 and 40,167.84
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Solution
The fourth proportional to 128,907.16, 193,360.72 and 40,167.84 is: 60,251.75
Step by Step Solution
- Step 1: Write the proportion equation
128,907.16 : 193,360.72 = 40,167.84 : x - Step 2: Convert to fraction form
128,907.16/193,360.72 = 40,167.84/x - Step 3: Cross multiply
128,907.16x = 193,360.72 × 40,167.84 - Step 4: Simplify right side
128,907.16x = 7,766,882,463.24 - Step 5: Solve for x
x = 7,766,882,463.24/128,907.16 - Step 6: Final answer
x = 60,251.75
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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.