Finding the Fourth Proportional to 98,211.08, 135,542.78 and 55,190.63
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Solution
The fourth proportional to 98,211.08, 135,542.78 and 55,190.63 is: 76,169.53
Step by Step Solution
- Step 1: Write the proportion equation
98,211.08 : 135,542.78 = 55,190.63 : x - Step 2: Convert to fraction form
98,211.08/135,542.78 = 55,190.63/x - Step 3: Cross multiply
98,211.08x = 135,542.78 × 55,190.63 - Step 4: Simplify right side
98,211.08x = 7,480,691,420.15 - Step 5: Solve for x
x = 7,480,691,420.15/98,211.08 - Step 6: Final answer
x = 76,169.53
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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.