Finding the Fourth Proportional to 103,980.84, 143,427.49 and 68,173.17
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Solution
The fourth proportional to 103,980.84, 143,427.49 and 68,173.17 is: 94,035.66
Step by Step Solution
- Step 1: Write the proportion equation
103,980.84 : 143,427.49 = 68,173.17 : x - Step 2: Convert to fraction form
103,980.84/143,427.49 = 68,173.17/x - Step 3: Cross multiply
103,980.84x = 143,427.49 × 68,173.17 - Step 4: Simplify right side
103,980.84x = 9,777,906,658.44 - Step 5: Solve for x
x = 9,777,906,658.44/103,980.84 - Step 6: Final answer
x = 94,035.66
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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.