Finding the Fourth Proportional to 83,211.20, 124,816.80 and 73,369.70
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Solution
The fourth proportional to 83,211.20, 124,816.80 and 73,369.70 is: 110,054.55
Step by Step Solution
- Step 1: Write the proportion equation
83,211.20 : 124,816.80 = 73,369.70 : x - Step 2: Convert to fraction form
83,211.20/124,816.80 = 73,369.70/x - Step 3: Cross multiply
83,211.20x = 124,816.80 × 73,369.70 - Step 4: Simplify right side
83,211.20x = 9,157,771,170.96 - Step 5: Solve for x
x = 9,157,771,170.96/83,211.20 - Step 6: Final answer
x = 110,054.55
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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.