Finding the Fourth Proportional to 128,051.68, 176,694.24 and 74,336.08
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Solution
The fourth proportional to 128,051.68, 176,694.24 and 74,336.08 is: 102,573.88
Step by Step Solution
- Step 1: Write the proportion equation
128,051.68 : 176,694.24 = 74,336.08 : x - Step 2: Convert to fraction form
128,051.68/176,694.24 = 74,336.08/x - Step 3: Cross multiply
128,051.68x = 176,694.24 × 74,336.08 - Step 4: Simplify right side
128,051.68x = 13,134,757,160.18 - Step 5: Solve for x
x = 13,134,757,160.18/128,051.68 - Step 6: Final answer
x = 102,573.88
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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.