Finding the Fourth Proportional to 99,230.70, 148,481.55 and 72,986.70
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Solution
The fourth proportional to 99,230.70, 148,481.55 and 72,986.70 is: 109,211.95
Step by Step Solution
- Step 1: Write the proportion equation
99,230.70 : 148,481.55 = 72,986.70 : x - Step 2: Convert to fraction form
99,230.70/148,481.55 = 72,986.70/x - Step 3: Cross multiply
99,230.70x = 148,481.55 × 72,986.70 - Step 4: Simplify right side
99,230.70x = 10,837,178,345.39 - Step 5: Solve for x
x = 10,837,178,345.39/99,230.70 - Step 6: Final answer
x = 109,211.95
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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.