Finding the Fourth Proportional to 139,795.05, 192,915.84 and 76,133.91
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Solution
The fourth proportional to 139,795.05, 192,915.84 and 76,133.91 is: 105,064.07
Step by Step Solution
- Step 1: Write the proportion equation
139,795.05 : 192,915.84 = 76,133.91 : x - Step 2: Convert to fraction form
139,795.05/192,915.84 = 76,133.91/x - Step 3: Cross multiply
139,795.05x = 192,915.84 × 76,133.91 - Step 4: Simplify right side
139,795.05x = 14,687,437,200.13 - Step 5: Solve for x
x = 14,687,437,200.13/139,795.05 - Step 6: Final answer
x = 105,064.07
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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.