Finding the Fourth Proportional to 157,082.70, 235,624.05 and 121,653.30
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Solution
The fourth proportional to 157,082.70, 235,624.05 and 121,653.30 is: 182,479.95
Step by Step Solution
- Step 1: Write the proportion equation
157,082.70 : 235,624.05 = 121,653.30 : x - Step 2: Convert to fraction form
157,082.70/235,624.05 = 121,653.30/x - Step 3: Cross multiply
157,082.70x = 235,624.05 × 121,653.30 - Step 4: Simplify right side
157,082.70x = 28,664,443,241.87 - Step 5: Solve for x
x = 28,664,443,241.87/157,082.70 - Step 6: Final answer
x = 182,479.95
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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.