Finding the Fourth Proportional to 128,637.72, 192,956.58 and 58,537.08
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Solution
The fourth proportional to 128,637.72, 192,956.58 and 58,537.08 is: 87,805.62
Step by Step Solution
- Step 1: Write the proportion equation
128,637.72 : 192,956.58 = 58,537.08 : x - Step 2: Convert to fraction form
128,637.72/192,956.58 = 58,537.08/x - Step 3: Cross multiply
128,637.72x = 192,956.58 × 58,537.08 - Step 4: Simplify right side
128,637.72x = 11,295,114,759.99 - Step 5: Solve for x
x = 11,295,114,759.99/128,637.72 - Step 6: Final answer
x = 87,805.62
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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.