Finding the Fourth Proportional to 100,154.26, 138,214.52 and 54,831.49
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Solution
The fourth proportional to 100,154.26, 138,214.52 and 54,831.49 is: 75,668.35
Step by Step Solution
- Step 1: Write the proportion equation
100,154.26 : 138,214.52 = 54,831.49 : x - Step 2: Convert to fraction form
100,154.26/138,214.52 = 54,831.49/x - Step 3: Cross multiply
100,154.26x = 138,214.52 × 54,831.49 - Step 4: Simplify right side
100,154.26x = 7,578,508,071.23 - Step 5: Solve for x
x = 7,578,508,071.23/100,154.26 - Step 6: Final answer
x = 75,668.35
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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.