Finding the Fourth Proportional to 131,628.08, 181,650.92 and 72,012.08
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Solution
The fourth proportional to 131,628.08, 181,650.92 and 72,012.08 is: 99,378.95
Step by Step Solution
- Step 1: Write the proportion equation
131,628.08 : 181,650.92 = 72,012.08 : x - Step 2: Convert to fraction form
131,628.08/181,650.92 = 72,012.08/x - Step 3: Cross multiply
131,628.08x = 181,650.92 × 72,012.08 - Step 4: Simplify right side
131,628.08x = 13,081,060,583.11 - Step 5: Solve for x
x = 13,081,060,583.11/131,628.08 - Step 6: Final answer
x = 99,378.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.