Finding the Fourth Proportional to 128,557.41, 192,762.27 and 68,511.95
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Solution
The fourth proportional to 128,557.41, 192,762.27 and 68,511.95 is: 102,728.56
Step by Step Solution
- Step 1: Write the proportion equation
128,557.41 : 192,762.27 = 68,511.95 : x - Step 2: Convert to fraction form
128,557.41/192,762.27 = 68,511.95/x - Step 3: Cross multiply
128,557.41x = 192,762.27 × 68,511.95 - Step 4: Simplify right side
128,557.41x = 13,206,518,040.32 - Step 5: Solve for x
x = 13,206,518,040.32/128,557.41 - Step 6: Final answer
x = 102,728.56
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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.