Finding the Fourth Proportional to 141,711.64, 195,560.84 and 78,048.08
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Solution
The fourth proportional to 141,711.64, 195,560.84 and 78,048.08 is: 107,705.68
Step by Step Solution
- Step 1: Write the proportion equation
141,711.64 : 195,560.84 = 78,048.08 : x - Step 2: Convert to fraction form
141,711.64/195,560.84 = 78,048.08/x - Step 3: Cross multiply
141,711.64x = 195,560.84 × 78,048.08 - Step 4: Simplify right side
141,711.64x = 15,263,148,085.19 - Step 5: Solve for x
x = 15,263,148,085.19/141,711.64 - Step 6: Final answer
x = 107,705.68
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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.