Finding the Fourth Proportional to 139,690.84, 209,202.73 and 80,401.88
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Solution
The fourth proportional to 139,690.84, 209,202.73 and 80,401.88 is: 120,410.85
Step by Step Solution
- Step 1: Write the proportion equation
139,690.84 : 209,202.73 = 80,401.88 : x - Step 2: Convert to fraction form
139,690.84/209,202.73 = 80,401.88/x - Step 3: Cross multiply
139,690.84x = 209,202.73 × 80,401.88 - Step 4: Simplify right side
139,690.84x = 16,820,292,793.13 - Step 5: Solve for x
x = 16,820,292,793.13/139,690.84 - Step 6: Final answer
x = 120,410.85
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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.