Finding the Fourth Proportional to 139,695.73, 192,780.09 and 76,033.99
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Solution
The fourth proportional to 139,695.73, 192,780.09 and 76,033.99 is: 104,926.90
Step by Step Solution
- Step 1: Write the proportion equation
139,695.73 : 192,780.09 = 76,033.99 : x - Step 2: Convert to fraction form
139,695.73/192,780.09 = 76,033.99/x - Step 3: Cross multiply
139,695.73x = 192,780.09 × 76,033.99 - Step 4: Simplify right side
139,695.73x = 14,657,839,435.26 - Step 5: Solve for x
x = 14,657,839,435.26/139,695.73 - Step 6: Final answer
x = 104,926.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.