Finding the Fourth Proportional to 100,316.75, 138,451.28 and 62,088.57
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Solution
The fourth proportional to 100,316.75, 138,451.28 and 62,088.57 is: 85,690.99
Step by Step Solution
- Step 1: Write the proportion equation
100,316.75 : 138,451.28 = 62,088.57 : x - Step 2: Convert to fraction form
100,316.75/138,451.28 = 62,088.57/x - Step 3: Cross multiply
100,316.75x = 138,451.28 × 62,088.57 - Step 4: Simplify right side
100,316.75x = 8,596,241,679.43 - Step 5: Solve for x
x = 8,596,241,679.43/100,316.75 - Step 6: Final answer
x = 85,690.99
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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.