Finding the Fourth Proportional to 97,769.40, 134,948.52 and 91,120.92
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Solution
The fourth proportional to 97,769.40, 134,948.52 and 91,120.92 is: 125,771.80
Step by Step Solution
- Step 1: Write the proportion equation
97,769.40 : 134,948.52 = 91,120.92 : x - Step 2: Convert to fraction form
97,769.40/134,948.52 = 91,120.92/x - Step 3: Cross multiply
97,769.40x = 134,948.52 × 91,120.92 - Step 4: Simplify right side
97,769.40x = 12,296,633,295.04 - Step 5: Solve for x
x = 12,296,633,295.04/97,769.40 - Step 6: Final answer
x = 125,771.80
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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.