Finding the Fourth Proportional to 112,474.38, 155,236.23 and 72,238.98
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Solution
The fourth proportional to 112,474.38, 155,236.23 and 72,238.98 is: 99,703.66
Step by Step Solution
- Step 1: Write the proportion equation
112,474.38 : 155,236.23 = 72,238.98 : x - Step 2: Convert to fraction form
112,474.38/155,236.23 = 72,238.98/x - Step 3: Cross multiply
112,474.38x = 155,236.23 × 72,238.98 - Step 4: Simplify right side
112,474.38x = 11,214,106,914.25 - Step 5: Solve for x
x = 11,214,106,914.25/112,474.38 - Step 6: Final answer
x = 99,703.66
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1.5x scale
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.