Finding the Fourth Proportional to 128,540.13, 192,692.12 and 44,280.26
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Solution
The fourth proportional to 128,540.13, 192,692.12 and 44,280.26 is: 66,379.71
Step by Step Solution
- Step 1: Write the proportion equation
128,540.13 : 192,692.12 = 44,280.26 : x - Step 2: Convert to fraction form
128,540.13/192,692.12 = 44,280.26/x - Step 3: Cross multiply
128,540.13x = 192,692.12 × 44,280.26 - Step 4: Simplify right side
128,540.13x = 8,532,455,988.69 - Step 5: Solve for x
x = 8,532,455,988.69/128,540.13 - Step 6: Final answer
x = 66,379.71
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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.