Finding the Fourth Proportional to 103,997.93, 143,478.65 and 68,207.81
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Solution
The fourth proportional to 103,997.93, 143,478.65 and 68,207.81 is: 94,101.53
Step by Step Solution
- Step 1: Write the proportion equation
103,997.93 : 143,478.65 = 68,207.81 : x - Step 2: Convert to fraction form
103,997.93/143,478.65 = 68,207.81/x - Step 3: Cross multiply
103,997.93x = 143,478.65 × 68,207.81 - Step 4: Simplify right side
103,997.93x = 9,786,363,951.38 - Step 5: Solve for x
x = 9,786,363,951.38/103,997.93 - Step 6: Final answer
x = 94,101.53
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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.