Finding the Fourth Proportional to 135,919.14, 187,506.84 and 87,503.70
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Solution
The fourth proportional to 135,919.14, 187,506.84 and 87,503.70 is: 120,715.47
Step by Step Solution
- Step 1: Write the proportion equation
135,919.14 : 187,506.84 = 87,503.70 : x - Step 2: Convert to fraction form
135,919.14/187,506.84 = 87,503.70/x - Step 3: Cross multiply
135,919.14x = 187,506.84 × 87,503.70 - Step 4: Simplify right side
135,919.14x = 16,407,542,275.31 - Step 5: Solve for x
x = 16,407,542,275.31/135,919.14 - Step 6: Final answer
x = 120,715.47
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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.