Finding the Fourth Proportional to 128,881.08, 193,243.97 and 57,790.85
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Solution
The fourth proportional to 128,881.08, 193,243.97 and 57,790.85 is: 86,651.46
Step by Step Solution
- Step 1: Write the proportion equation
128,881.08 : 193,243.97 = 57,790.85 : x - Step 2: Convert to fraction form
128,881.08/193,243.97 = 57,790.85/x - Step 3: Cross multiply
128,881.08x = 193,243.97 × 57,790.85 - Step 4: Simplify right side
128,881.08x = 11,167,733,283.67 - Step 5: Solve for x
x = 11,167,733,283.67/128,881.08 - Step 6: Final answer
x = 86,651.46
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1.5x scale
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.