Finding the Fourth Proportional to 117,731.07, 162,528.98 and 79,691.65
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Solution
The fourth proportional to 117,731.07, 162,528.98 and 79,691.65 is: 110,015.15
Step by Step Solution
- Step 1: Write the proportion equation
117,731.07 : 162,528.98 = 79,691.65 : x - Step 2: Convert to fraction form
117,731.07/162,528.98 = 79,691.65/x - Step 3: Cross multiply
117,731.07x = 162,528.98 × 79,691.65 - Step 4: Simplify right side
117,731.07x = 12,952,201,784.24 - Step 5: Solve for x
x = 12,952,201,784.24/117,731.07 - Step 6: Final answer
x = 110,015.15
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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.