Finding the Fourth Proportional to 135,791.91, 187,415.36 and 79,203.28
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Solution
The fourth proportional to 135,791.91, 187,415.36 and 79,203.28 is: 109,313.66
Step by Step Solution
- Step 1: Write the proportion equation
135,791.91 : 187,415.36 = 79,203.28 : x - Step 2: Convert to fraction form
135,791.91/187,415.36 = 79,203.28/x - Step 3: Cross multiply
135,791.91x = 187,415.36 × 79,203.28 - Step 4: Simplify right side
135,791.91x = 14,843,911,234.38 - Step 5: Solve for x
x = 14,843,911,234.38/135,791.91 - Step 6: Final answer
x = 109,313.66
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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.