Finding the Fourth Proportional to 128,929.73, 192,452.36 and 119,432.68
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Solution
The fourth proportional to 128,929.73, 192,452.36 and 119,432.68 is: 178,276.19
Step by Step Solution
- Step 1: Write the proportion equation
128,929.73 : 192,452.36 = 119,432.68 : x - Step 2: Convert to fraction form
128,929.73/192,452.36 = 119,432.68/x - Step 3: Cross multiply
128,929.73x = 192,452.36 × 119,432.68 - Step 4: Simplify right side
128,929.73x = 22,985,100,048.83 - Step 5: Solve for x
x = 22,985,100,048.83/128,929.73 - Step 6: Final answer
x = 178,276.19
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.