Finding the Fourth Proportional to 128,107.20, 191,901.60 and 88,708.80
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Solution
The fourth proportional to 128,107.20, 191,901.60 and 88,708.80 is: 132,883.71
Step by Step Solution
- Step 1: Write the proportion equation
128,107.20 : 191,901.60 = 88,708.80 : x - Step 2: Convert to fraction form
128,107.20/191,901.60 = 88,708.80/x - Step 3: Cross multiply
128,107.20x = 191,901.60 × 88,708.80 - Step 4: Simplify right side
128,107.20x = 17,023,360,654.08 - Step 5: Solve for x
x = 17,023,360,654.08/128,107.20 - Step 6: Final answer
x = 132,883.71
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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.