Finding the Fourth Proportional to 136,652.70, 205,065.45 and 80,492.70
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Solution
The fourth proportional to 136,652.70, 205,065.45 and 80,492.70 is: 120,789.94
Step by Step Solution
- Step 1: Write the proportion equation
136,652.70 : 205,065.45 = 80,492.70 : x - Step 2: Convert to fraction form
136,652.70/205,065.45 = 80,492.70/x - Step 3: Cross multiply
136,652.70x = 205,065.45 × 80,492.70 - Step 4: Simplify right side
136,652.70x = 16,506,271,747.22 - Step 5: Solve for x
x = 16,506,271,747.22/136,652.70 - Step 6: Final answer
x = 120,789.94
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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.