Finding the Fourth Proportional to 128,302.30, 192,398.40 and 44,070.94
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Solution
The fourth proportional to 128,302.30, 192,398.40 and 44,070.94 is: 66,087.50
Step by Step Solution
- Step 1: Write the proportion equation
128,302.30 : 192,398.40 = 44,070.94 : x - Step 2: Convert to fraction form
128,302.30/192,398.40 = 44,070.94/x - Step 3: Cross multiply
128,302.30x = 192,398.40 × 44,070.94 - Step 4: Simplify right side
128,302.30x = 8,479,178,342.50 - Step 5: Solve for x
x = 8,479,178,342.50/128,302.30 - Step 6: Final answer
x = 66,087.50
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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.