Finding the Fourth Proportional to 129,766.24, 178,811.70 and 95,720.80
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Solution
The fourth proportional to 129,766.24, 178,811.70 and 95,720.80 is: 131,898.70
Step by Step Solution
- Step 1: Write the proportion equation
129,766.24 : 178,811.70 = 95,720.80 : x - Step 2: Convert to fraction form
129,766.24/178,811.70 = 95,720.80/x - Step 3: Cross multiply
129,766.24x = 178,811.70 × 95,720.80 - Step 4: Simplify right side
129,766.24x = 17,115,998,973.36 - Step 5: Solve for x
x = 17,115,998,973.36/129,766.24 - Step 6: Final answer
x = 131,898.70
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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.