Finding the Fourth Proportional to 131,985.96, 182,126.99 and 81,000.84
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Solution
The fourth proportional to 131,985.96, 182,126.99 and 81,000.84 is: 111,772.79
Step by Step Solution
- Step 1: Write the proportion equation
131,985.96 : 182,126.99 = 81,000.84 : x - Step 2: Convert to fraction form
131,985.96/182,126.99 = 81,000.84/x - Step 3: Cross multiply
131,985.96x = 182,126.99 × 81,000.84 - Step 4: Simplify right side
131,985.96x = 14,752,438,771.67 - Step 5: Solve for x
x = 14,752,438,771.67/131,985.96 - Step 6: Final answer
x = 111,772.79
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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.