Finding the Fourth Proportional to 128,266.39, 192,424.79 and 39,504.79
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Solution
The fourth proportional to 128,266.39, 192,424.79 and 39,504.79 is: 59,264.95
Step by Step Solution
- Step 1: Write the proportion equation
128,266.39 : 192,424.79 = 39,504.79 : x - Step 2: Convert to fraction form
128,266.39/192,424.79 = 39,504.79/x - Step 3: Cross multiply
128,266.39x = 192,424.79 × 39,504.79 - Step 4: Simplify right side
128,266.39x = 7,601,700,919.74 - Step 5: Solve for x
x = 7,601,700,919.74/128,266.39 - Step 6: Final answer
x = 59,264.95
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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.