Finding the Fourth Proportional to 121,831.20, 182,503.80 and 107,218.80
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Solution
The fourth proportional to 121,831.20, 182,503.80 and 107,218.80 is: 160,614.35
Step by Step Solution
- Step 1: Write the proportion equation
121,831.20 : 182,503.80 = 107,218.80 : x - Step 2: Convert to fraction form
121,831.20/182,503.80 = 107,218.80/x - Step 3: Cross multiply
121,831.20x = 182,503.80 × 107,218.80 - Step 4: Simplify right side
121,831.20x = 19,567,838,431.44 - Step 5: Solve for x
x = 19,567,838,431.44/121,831.20 - Step 6: Final answer
x = 160,614.35
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1.5x scale
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.