Finding the Fourth Proportional to 145,961.68, 201,427.42 and 78,893.68
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Solution
The fourth proportional to 145,961.68, 201,427.42 and 78,893.68 is: 108,873.44
Step by Step Solution
- Step 1: Write the proportion equation
145,961.68 : 201,427.42 = 78,893.68 : x - Step 2: Convert to fraction form
145,961.68/201,427.42 = 78,893.68/x - Step 3: Cross multiply
145,961.68x = 201,427.42 × 78,893.68 - Step 4: Simplify right side
145,961.68x = 15,891,350,416.71 - Step 5: Solve for x
x = 15,891,350,416.71/145,961.68 - Step 6: Final answer
x = 108,873.44
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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.