Finding the Fourth Proportional to 120,999.12, 166,971.92 and 67,282.99
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Solution
The fourth proportional to 120,999.12, 166,971.92 and 67,282.99 is: 92,846.70
Step by Step Solution
- Step 1: Write the proportion equation
120,999.12 : 166,971.92 = 67,282.99 : x - Step 2: Convert to fraction form
120,999.12/166,971.92 = 67,282.99/x - Step 3: Cross multiply
120,999.12x = 166,971.92 × 67,282.99 - Step 4: Simplify right side
120,999.12x = 11,234,369,269.80 - Step 5: Solve for x
x = 11,234,369,269.80/120,999.12 - Step 6: Final answer
x = 92,846.70
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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.