Finding the Fourth Proportional to 190,638.74, 285,772.17 and 90,772.10
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Solution
The fourth proportional to 190,638.74, 285,772.17 and 90,772.10 is: 136,069.62
Step by Step Solution
- Step 1: Write the proportion equation
190,638.74 : 285,772.17 = 90,772.10 : x - Step 2: Convert to fraction form
190,638.74/285,772.17 = 90,772.10/x - Step 3: Cross multiply
190,638.74x = 285,772.17 × 90,772.10 - Step 4: Simplify right side
190,638.74x = 25,940,139,992.46 - Step 5: Solve for x
x = 25,940,139,992.46/190,638.74 - Step 6: Final answer
x = 136,069.62
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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.