Finding the Fourth Proportional to 128,309.32, 192,398.26 and 68,371.95
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Solution
The fourth proportional to 128,309.32, 192,398.26 and 68,371.95 is: 102,522.90
Step by Step Solution
- Step 1: Write the proportion equation
128,309.32 : 192,398.26 = 68,371.95 : x - Step 2: Convert to fraction form
128,309.32/192,398.26 = 68,371.95/x - Step 3: Cross multiply
128,309.32x = 192,398.26 × 68,371.95 - Step 4: Simplify right side
128,309.32x = 13,154,644,212.81 - Step 5: Solve for x
x = 13,154,644,212.81/128,309.32 - Step 6: Final answer
x = 102,522.90
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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.