Finding the Fourth Proportional to 141,871.44, 195,783.18 and 78,207.84
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Solution
The fourth proportional to 141,871.44, 195,783.18 and 78,207.84 is: 107,927.15
Step by Step Solution
- Step 1: Write the proportion equation
141,871.44 : 195,783.18 = 78,207.84 : x - Step 2: Convert to fraction form
141,871.44/195,783.18 = 78,207.84/x - Step 3: Cross multiply
141,871.44x = 195,783.18 × 78,207.84 - Step 4: Simplify right side
141,871.44x = 15,311,779,616.13 - Step 5: Solve for x
x = 15,311,779,616.13/141,871.44 - Step 6: Final answer
x = 107,927.15
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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.