Finding the Fourth Proportional to 128,774.20, 193,007.70 and 53,894.20
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Solution
The fourth proportional to 128,774.20, 193,007.70 and 53,894.20 is: 80,777.02
Step by Step Solution
- Step 1: Write the proportion equation
128,774.20 : 193,007.70 = 53,894.20 : x - Step 2: Convert to fraction form
128,774.20/193,007.70 = 53,894.20/x - Step 3: Cross multiply
128,774.20x = 193,007.70 × 53,894.20 - Step 4: Simplify right side
128,774.20x = 10,401,995,585.34 - Step 5: Solve for x
x = 10,401,995,585.34/128,774.20 - Step 6: Final answer
x = 80,777.02
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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.