Finding the Fourth Proportional to 128,893.92, 193,340.52 and 72,708.53
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Solution
The fourth proportional to 128,893.92, 193,340.52 and 72,708.53 is: 109,062.58
Step by Step Solution
- Step 1: Write the proportion equation
128,893.92 : 193,340.52 = 72,708.53 : x - Step 2: Convert to fraction form
128,893.92/193,340.52 = 72,708.53/x - Step 3: Cross multiply
128,893.92x = 193,340.52 × 72,708.53 - Step 4: Simplify right side
128,893.92x = 14,057,504,031.93 - Step 5: Solve for x
x = 14,057,504,031.93/128,893.92 - Step 6: Final answer
x = 109,062.58
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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.