Finding the Fourth Proportional to 139,750.70, 209,626.05 and 80,701.70
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Solution
The fourth proportional to 139,750.70, 209,626.05 and 80,701.70 is: 121,052.55
Step by Step Solution
- Step 1: Write the proportion equation
139,750.70 : 209,626.05 = 80,701.70 : x - Step 2: Convert to fraction form
139,750.70/209,626.05 = 80,701.70/x - Step 3: Cross multiply
139,750.70x = 209,626.05 × 80,701.70 - Step 4: Simplify right side
139,750.70x = 16,917,178,599.29 - Step 5: Solve for x
x = 16,917,178,599.29/139,750.70 - Step 6: Final answer
x = 121,052.55
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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.