Finding the Fourth Proportional to 115,939.70, 173,909.55 and 92,611.70
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Solution
The fourth proportional to 115,939.70, 173,909.55 and 92,611.70 is: 138,917.55
Step by Step Solution
- Step 1: Write the proportion equation
115,939.70 : 173,909.55 = 92,611.70 : x - Step 2: Convert to fraction form
115,939.70/173,909.55 = 92,611.70/x - Step 3: Cross multiply
115,939.70x = 173,909.55 × 92,611.70 - Step 4: Simplify right side
115,939.70x = 16,106,059,071.74 - Step 5: Solve for x
x = 16,106,059,071.74/115,939.70 - Step 6: Final answer
x = 138,917.55
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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.