Finding the Fourth Proportional to 138,642.06, 207,963.11 and 38,816.96
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Solution
The fourth proportional to 138,642.06, 207,963.11 and 38,816.96 is: 58,225.44
Step by Step Solution
- Step 1: Write the proportion equation
138,642.06 : 207,963.11 = 38,816.96 : x - Step 2: Convert to fraction form
138,642.06/207,963.11 = 38,816.96/x - Step 3: Cross multiply
138,642.06x = 207,963.11 × 38,816.96 - Step 4: Simplify right side
138,642.06x = 8,072,494,779.57 - Step 5: Solve for x
x = 8,072,494,779.57/138,642.06 - Step 6: Final answer
x = 58,225.44
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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.