Finding the Fourth Proportional to 139,735.18, 192,834.57 and 76,072.96
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Solution
The fourth proportional to 139,735.18, 192,834.57 and 76,072.96 is: 104,980.70
Step by Step Solution
- Step 1: Write the proportion equation
139,735.18 : 192,834.57 = 76,072.96 : x - Step 2: Convert to fraction form
139,735.18/192,834.57 = 76,072.96/x - Step 3: Cross multiply
139,735.18x = 192,834.57 × 76,072.96 - Step 4: Simplify right side
139,735.18x = 14,669,496,530.23 - Step 5: Solve for x
x = 14,669,496,530.23/139,735.18 - Step 6: Final answer
x = 104,980.70
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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.