Finding the Fourth Proportional to 128,712.20, 193,094.02 and 44,475.40
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Solution
The fourth proportional to 128,712.20, 193,094.02 and 44,475.40 is: 66,721.99
Step by Step Solution
- Step 1: Write the proportion equation
128,712.20 : 193,094.02 = 44,475.40 : x - Step 2: Convert to fraction form
128,712.20/193,094.02 = 44,475.40/x - Step 3: Cross multiply
128,712.20x = 193,094.02 × 44,475.40 - Step 4: Simplify right side
128,712.20x = 8,587,933,777.11 - Step 5: Solve for x
x = 8,587,933,777.11/128,712.20 - Step 6: Final answer
x = 66,721.99
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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.