Finding the Fourth Proportional to 103,715.92, 143,121.84 and 58,392.08
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Solution
The fourth proportional to 103,715.92, 143,121.84 and 58,392.08 is: 80,577.62
Step by Step Solution
- Step 1: Write the proportion equation
103,715.92 : 143,121.84 = 58,392.08 : x - Step 2: Convert to fraction form
103,715.92/143,121.84 = 58,392.08/x - Step 3: Cross multiply
103,715.92x = 143,121.84 × 58,392.08 - Step 4: Simplify right side
103,715.92x = 8,357,181,215.42 - Step 5: Solve for x
x = 8,357,181,215.42/103,715.92 - Step 6: Final answer
x = 80,577.62
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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.