Finding the Fourth Proportional to 112,319.86, 168,450.99 and 53,139.70
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Solution
The fourth proportional to 112,319.86, 168,450.99 and 53,139.70 is: 79,695.92
Step by Step Solution
- Step 1: Write the proportion equation
112,319.86 : 168,450.99 = 53,139.70 : x - Step 2: Convert to fraction form
112,319.86/168,450.99 = 53,139.70/x - Step 3: Cross multiply
112,319.86x = 168,450.99 × 53,139.70 - Step 4: Simplify right side
112,319.86x = 8,951,435,073.30 - Step 5: Solve for x
x = 8,951,435,073.30/112,319.86 - Step 6: Final answer
x = 79,695.92
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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.