Finding the Fourth Proportional to 128,353.91, 192,530.19 and 34,859.66
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Solution
The fourth proportional to 128,353.91, 192,530.19 and 34,859.66 is: 52,289.31
Step by Step Solution
- Step 1: Write the proportion equation
128,353.91 : 192,530.19 = 34,859.66 : x - Step 2: Convert to fraction form
128,353.91/192,530.19 = 34,859.66/x - Step 3: Cross multiply
128,353.91x = 192,530.19 × 34,859.66 - Step 4: Simplify right side
128,353.91x = 6,711,536,963.14 - Step 5: Solve for x
x = 6,711,536,963.14/128,353.91 - Step 6: Final answer
x = 52,289.31
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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.