Finding the Fourth Proportional to 203,706.80, 305,669.55 and 85,390.10
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Solution
The fourth proportional to 203,706.80, 305,669.55 and 85,390.10 is: 128,130.99
Step by Step Solution
- Step 1: Write the proportion equation
203,706.80 : 305,669.55 = 85,390.10 : x - Step 2: Convert to fraction form
203,706.80/305,669.55 = 85,390.10/x - Step 3: Cross multiply
203,706.80x = 305,669.55 × 85,390.10 - Step 4: Simplify right side
203,706.80x = 26,101,153,441.46 - Step 5: Solve for x
x = 26,101,153,441.46/203,706.80 - Step 6: Final answer
x = 128,130.99
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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.