Finding the Fourth Proportional to 128,933.79, 193,475.99 and 54,048.18
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Solution
The fourth proportional to 128,933.79, 193,475.99 and 54,048.18 is: 81,103.84
Step by Step Solution
- Step 1: Write the proportion equation
128,933.79 : 193,475.99 = 54,048.18 : x - Step 2: Convert to fraction form
128,933.79/193,475.99 = 54,048.18/x - Step 3: Cross multiply
128,933.79x = 193,475.99 × 54,048.18 - Step 4: Simplify right side
128,933.79x = 10,457,024,862.96 - Step 5: Solve for x
x = 10,457,024,862.96/128,933.79 - Step 6: Final answer
x = 81,103.84
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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.