Finding the Fourth Proportional to 141,764.99, 195,636.16 and 78,102.63
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Solution
The fourth proportional to 141,764.99, 195,636.16 and 78,102.63 is: 107,781.89
Step by Step Solution
- Step 1: Write the proportion equation
141,764.99 : 195,636.16 = 78,102.63 : x - Step 2: Convert to fraction form
141,764.99/195,636.16 = 78,102.63/x - Step 3: Cross multiply
141,764.99x = 195,636.16 × 78,102.63 - Step 4: Simplify right side
141,764.99x = 15,279,698,716.73 - Step 5: Solve for x
x = 15,279,698,716.73/141,764.99 - Step 6: Final answer
x = 107,781.89
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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.