Finding the Fourth Proportional to 129,124.98, 178,191.84 and 71,764.02
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Solution
The fourth proportional to 129,124.98, 178,191.84 and 71,764.02 is: 99,034.00
Step by Step Solution
- Step 1: Write the proportion equation
129,124.98 : 178,191.84 = 71,764.02 : x - Step 2: Convert to fraction form
129,124.98/178,191.84 = 71,764.02/x - Step 3: Cross multiply
129,124.98x = 178,191.84 × 71,764.02 - Step 4: Simplify right side
129,124.98x = 12,787,762,769.60 - Step 5: Solve for x
x = 12,787,762,769.60/129,124.98 - Step 6: Final answer
x = 99,034.00
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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.