Finding the Fourth Proportional to 138,118.44, 190,543.68 and 87,090.96
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Solution
The fourth proportional to 138,118.44, 190,543.68 and 87,090.96 is: 120,147.84
Step by Step Solution
- Step 1: Write the proportion equation
138,118.44 : 190,543.68 = 87,090.96 : x - Step 2: Convert to fraction form
138,118.44/190,543.68 = 87,090.96/x - Step 3: Cross multiply
138,118.44x = 190,543.68 × 87,090.96 - Step 4: Simplify right side
138,118.44x = 16,594,632,013.13 - Step 5: Solve for x
x = 16,594,632,013.13/138,118.44 - Step 6: Final answer
x = 120,147.84
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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.