Finding the Fourth Proportional to 117,636.20, 176,454.30 and 91,421.80
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Solution
The fourth proportional to 117,636.20, 176,454.30 and 91,421.80 is: 137,132.70
Step by Step Solution
- Step 1: Write the proportion equation
117,636.20 : 176,454.30 = 91,421.80 : x - Step 2: Convert to fraction form
117,636.20/176,454.30 = 91,421.80/x - Step 3: Cross multiply
117,636.20x = 176,454.30 × 91,421.80 - Step 4: Simplify right side
117,636.20x = 16,131,769,723.74 - Step 5: Solve for x
x = 16,131,769,723.74/117,636.20 - Step 6: Final answer
x = 137,132.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.