Finding the Fourth Proportional to 141,858.99, 195,766.74 and 78,199.08
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Solution
The fourth proportional to 141,858.99, 195,766.74 and 78,199.08 is: 107,915.47
Step by Step Solution
- Step 1: Write the proportion equation
141,858.99 : 195,766.74 = 78,199.08 : x - Step 2: Convert to fraction form
141,858.99/195,766.74 = 78,199.08/x - Step 3: Cross multiply
141,858.99x = 195,766.74 × 78,199.08 - Step 4: Simplify right side
141,858.99x = 15,308,778,962.60 - Step 5: Solve for x
x = 15,308,778,962.60/141,858.99 - Step 6: Final answer
x = 107,915.47
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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.