Finding the Fourth Proportional to 128,600.68, 192,930.94 and 39,849.48
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Solution
The fourth proportional to 128,600.68, 192,930.94 and 39,849.48 is: 59,783.49
Step by Step Solution
- Step 1: Write the proportion equation
128,600.68 : 192,930.94 = 39,849.48 : x - Step 2: Convert to fraction form
128,600.68/192,930.94 = 39,849.48/x - Step 3: Cross multiply
128,600.68x = 192,930.94 × 39,849.48 - Step 4: Simplify right side
128,600.68x = 7,688,197,634.91 - Step 5: Solve for x
x = 7,688,197,634.91/128,600.68 - Step 6: Final answer
x = 59,783.49
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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.