Finding the Fourth Proportional to 128,730.20, 192,843.92 and 61,166.08
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Solution
The fourth proportional to 128,730.20, 192,843.92 and 61,166.08 is: 91,629.68
Step by Step Solution
- Step 1: Write the proportion equation
128,730.20 : 192,843.92 = 61,166.08 : x - Step 2: Convert to fraction form
128,730.20/192,843.92 = 61,166.08/x - Step 3: Cross multiply
128,730.20x = 192,843.92 × 61,166.08 - Step 4: Simplify right side
128,730.20x = 11,795,506,638.23 - Step 5: Solve for x
x = 11,795,506,638.23/128,730.20 - Step 6: Final answer
x = 91,629.68
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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.