Finding the Fourth Proportional to 100,153.36, 138,211.98 and 54,831.76
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Solution
The fourth proportional to 100,153.36, 138,211.98 and 54,831.76 is: 75,668.02
Step by Step Solution
- Step 1: Write the proportion equation
100,153.36 : 138,211.98 = 54,831.76 : x - Step 2: Convert to fraction form
100,153.36/138,211.98 = 54,831.76/x - Step 3: Cross multiply
100,153.36x = 138,211.98 × 54,831.76 - Step 4: Simplify right side
100,153.36x = 7,578,406,116.48 - Step 5: Solve for x
x = 7,578,406,116.48/100,153.36 - Step 6: Final answer
x = 75,668.02
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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.