Finding the Fourth Proportional to 141,938.08, 195,859.52 and 78,272.08
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Solution
The fourth proportional to 141,938.08, 195,859.52 and 78,272.08 is: 108,007.18
Step by Step Solution
- Step 1: Write the proportion equation
141,938.08 : 195,859.52 = 78,272.08 : x - Step 2: Convert to fraction form
141,938.08/195,859.52 = 78,272.08/x - Step 3: Cross multiply
141,938.08x = 195,859.52 × 78,272.08 - Step 4: Simplify right side
141,938.08x = 15,330,332,018.20 - Step 5: Solve for x
x = 15,330,332,018.20/141,938.08 - Step 6: Final answer
x = 108,007.18
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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.