Finding the Fourth Proportional to 99,874.84, 137,882.64 and 68,090.44
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Solution
The fourth proportional to 99,874.84, 137,882.64 and 68,090.44 is: 94,002.55
Step by Step Solution
- Step 1: Write the proportion equation
99,874.84 : 137,882.64 = 68,090.44 : x - Step 2: Convert to fraction form
99,874.84/137,882.64 = 68,090.44/x - Step 3: Cross multiply
99,874.84x = 137,882.64 × 68,090.44 - Step 4: Simplify right side
99,874.84x = 9,388,489,625.96 - Step 5: Solve for x
x = 9,388,489,625.96/99,874.84 - Step 6: Final answer
x = 94,002.55
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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.