Finding the Fourth Proportional to 139,717.88, 192,810.68 and 76,056.14
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Solution
The fourth proportional to 139,717.88, 192,810.68 and 76,056.14 is: 104,957.47
Step by Step Solution
- Step 1: Write the proportion equation
139,717.88 : 192,810.68 = 76,056.14 : x - Step 2: Convert to fraction form
139,717.88/192,810.68 = 76,056.14/x - Step 3: Cross multiply
139,717.88x = 192,810.68 × 76,056.14 - Step 4: Simplify right side
139,717.88x = 14,664,434,727.24 - Step 5: Solve for x
x = 14,664,434,727.24/139,717.88 - Step 6: Final answer
x = 104,957.47
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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.