Finding the Fourth Proportional to 203,913.56, 305,935.35 and 85,553.12
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Solution
The fourth proportional to 203,913.56, 305,935.35 and 85,553.12 is: 128,356.96
Step by Step Solution
- Step 1: Write the proportion equation
203,913.56 : 305,935.35 = 85,553.12 : x - Step 2: Convert to fraction form
203,913.56/305,935.35 = 85,553.12/x - Step 3: Cross multiply
203,913.56x = 305,935.35 × 85,553.12 - Step 4: Simplify right side
203,913.56x = 26,173,724,154.81 - Step 5: Solve for x
x = 26,173,724,154.81/203,913.56 - Step 6: Final answer
x = 128,356.96
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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.