Finding the Fourth Proportional to 112,803.72, 155,874.42 and 107,337.84
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Solution
The fourth proportional to 112,803.72, 155,874.42 and 107,337.84 is: 148,321.56
Step by Step Solution
- Step 1: Write the proportion equation
112,803.72 : 155,874.42 = 107,337.84 : x - Step 2: Convert to fraction form
112,803.72/155,874.42 = 107,337.84/x - Step 3: Cross multiply
112,803.72x = 155,874.42 × 107,337.84 - Step 4: Simplify right side
112,803.72x = 16,731,223,554.05 - Step 5: Solve for x
x = 16,731,223,554.05/112,803.72 - Step 6: Final answer
x = 148,321.56
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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.