Finding the Fourth Proportional to 141,863.36, 195,772.80 and 78,203.68
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Solution
The fourth proportional to 141,863.36, 195,772.80 and 78,203.68 is: 107,921.83
Step by Step Solution
- Step 1: Write the proportion equation
141,863.36 : 195,772.80 = 78,203.68 : x - Step 2: Convert to fraction form
141,863.36/195,772.80 = 78,203.68/x - Step 3: Cross multiply
141,863.36x = 195,772.80 × 78,203.68 - Step 4: Simplify right side
141,863.36x = 15,310,153,403.90 - Step 5: Solve for x
x = 15,310,153,403.90/141,863.36 - Step 6: Final answer
x = 107,921.83
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1.5x scale
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.