Finding the Fourth Proportional to 128,937.24, 193,405.92 and 40,197.90
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Solution
The fourth proportional to 128,937.24, 193,405.92 and 40,197.90 is: 60,296.87
Step by Step Solution
- Step 1: Write the proportion equation
128,937.24 : 193,405.92 = 40,197.90 : x - Step 2: Convert to fraction form
128,937.24/193,405.92 = 40,197.90/x - Step 3: Cross multiply
128,937.24x = 193,405.92 × 40,197.90 - Step 4: Simplify right side
128,937.24x = 7,774,511,831.57 - Step 5: Solve for x
x = 7,774,511,831.57/128,937.24 - Step 6: Final answer
x = 60,296.87
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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.