Finding the Fourth Proportional to 141,915.24, 195,840.36 and 78,258.96
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Solution
The fourth proportional to 141,915.24, 195,840.36 and 78,258.96 is: 107,995.89
Step by Step Solution
- Step 1: Write the proportion equation
141,915.24 : 195,840.36 = 78,258.96 : x - Step 2: Convert to fraction form
141,915.24/195,840.36 = 78,258.96/x - Step 3: Cross multiply
141,915.24x = 195,840.36 × 78,258.96 - Step 4: Simplify right side
141,915.24x = 15,326,262,899.63 - Step 5: Solve for x
x = 15,326,262,899.63/141,915.24 - Step 6: Final answer
x = 107,995.89
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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.