Finding the Fourth Proportional to 109,195.70, 163,793.55 and 74,203.70
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Solution
The fourth proportional to 109,195.70, 163,793.55 and 74,203.70 is: 111,305.55
Step by Step Solution
- Step 1: Write the proportion equation
109,195.70 : 163,793.55 = 74,203.70 : x - Step 2: Convert to fraction form
109,195.70/163,793.55 = 74,203.70/x - Step 3: Cross multiply
109,195.70x = 163,793.55 × 74,203.70 - Step 4: Simplify right side
109,195.70x = 12,154,087,446.14 - Step 5: Solve for x
x = 12,154,087,446.14/109,195.70 - Step 6: Final answer
x = 111,305.55
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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.