Finding the Fourth Proportional to 135,390.34, 186,840.64 and 77,997.99
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Solution
The fourth proportional to 135,390.34, 186,840.64 and 77,997.99 is: 107,638.36
Step by Step Solution
- Step 1: Write the proportion equation
135,390.34 : 186,840.64 = 77,997.99 : x - Step 2: Convert to fraction form
135,390.34/186,840.64 = 77,997.99/x - Step 3: Cross multiply
135,390.34x = 186,840.64 × 77,997.99 - Step 4: Simplify right side
135,390.34x = 14,573,194,370.31 - Step 5: Solve for x
x = 14,573,194,370.31/135,390.34 - Step 6: Final answer
x = 107,638.36
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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.