Finding the Fourth Proportional to 155,831.24, 215,047.20 and 84,211.14
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Solution
The fourth proportional to 155,831.24, 215,047.20 and 84,211.14 is: 116,211.43
Step by Step Solution
- Step 1: Write the proportion equation
155,831.24 : 215,047.20 = 84,211.14 : x - Step 2: Convert to fraction form
155,831.24/215,047.20 = 84,211.14/x - Step 3: Cross multiply
155,831.24x = 215,047.20 × 84,211.14 - Step 4: Simplify right side
155,831.24x = 18,109,370,988.03 - Step 5: Solve for x
x = 18,109,370,988.03/155,831.24 - Step 6: Final answer
x = 116,211.43
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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.