Finding the Fourth Proportional to 100,207.08, 138,390.66 and 68,457.96
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Solution
The fourth proportional to 100,207.08, 138,390.66 and 68,457.96 is: 94,543.64
Step by Step Solution
- Step 1: Write the proportion equation
100,207.08 : 138,390.66 = 68,457.96 : x - Step 2: Convert to fraction form
100,207.08/138,390.66 = 68,457.96/x - Step 3: Cross multiply
100,207.08x = 138,390.66 × 68,457.96 - Step 4: Simplify right side
100,207.08x = 9,473,942,266.65 - Step 5: Solve for x
x = 9,473,942,266.65/100,207.08 - Step 6: Final answer
x = 94,543.64
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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.