Finding the Fourth Proportional to 128,517,112.49, 192,803,324.19 and 39,883,932.63
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Solution
The fourth proportional to 128,517,112.49, 192,803,324.19 and 39,883,932.63 is: 59,834,481.53
Step by Step Solution
- Step 1: Write the proportion equation
128,517,112.49 : 192,803,324.19 = 39,883,932.63 : x - Step 2: Convert to fraction form
128,517,112.49/192,803,324.19 = 39,883,932.63/x - Step 3: Cross multiply
128,517,112.49x = 192,803,324.19 × 39,883,932.63 - Step 4: Simplify right side
128,517,112.49x = 7,689,754,792,684,445 - Step 5: Solve for x
x = 7,689,754,792,684,445/128,517,112.49 - Step 6: Final answer
x = 59,834,481.53
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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.