Finding the Fourth Proportional to 120,690.70, 181,208.85 and 68,202.70
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Solution
The fourth proportional to 120,690.70, 181,208.85 and 68,202.70 is: 102,401.70
Step by Step Solution
- Step 1: Write the proportion equation
120,690.70 : 181,208.85 = 68,202.70 : x - Step 2: Convert to fraction form
120,690.70/181,208.85 = 68,202.70/x - Step 3: Cross multiply
120,690.70x = 181,208.85 × 68,202.70 - Step 4: Simplify right side
120,690.70x = 12,358,932,833.90 - Step 5: Solve for x
x = 12,358,932,833.90/120,690.70 - Step 6: Final answer
x = 102,401.70
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1.5x scale
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.