Finding the Fourth Proportional to 138,120.08, 190,604.67 and 78,504.08
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Solution
The fourth proportional to 138,120.08, 190,604.67 and 78,504.08 is: 108,335.04
Step by Step Solution
- Step 1: Write the proportion equation
138,120.08 : 190,604.67 = 78,504.08 : x - Step 2: Convert to fraction form
138,120.08/190,604.67 = 78,504.08/x - Step 3: Cross multiply
138,120.08x = 190,604.67 × 78,504.08 - Step 4: Simplify right side
138,120.08x = 14,963,244,262.05 - Step 5: Solve for x
x = 14,963,244,262.05/138,120.08 - Step 6: Final answer
x = 108,335.04
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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.