Finding the Fourth Proportional to 155,279.19, 214,258.53 and 87,286.74
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Solution
The fourth proportional to 155,279.19, 214,258.53 and 87,286.74 is: 120,440.66
Step by Step Solution
- Step 1: Write the proportion equation
155,279.19 : 214,258.53 = 87,286.74 : x - Step 2: Convert to fraction form
155,279.19/214,258.53 = 87,286.74/x - Step 3: Cross multiply
155,279.19x = 214,258.53 × 87,286.74 - Step 4: Simplify right side
155,279.19x = 18,701,928,600.89 - Step 5: Solve for x
x = 18,701,928,600.89/155,279.19 - Step 6: Final answer
x = 120,440.66
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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.