Finding the Fourth Proportional to 135,687.08, 187,220.21 and 78,325.49
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Solution
The fourth proportional to 135,687.08, 187,220.21 and 78,325.49 is: 108,073.03
Step by Step Solution
- Step 1: Write the proportion equation
135,687.08 : 187,220.21 = 78,325.49 : x - Step 2: Convert to fraction form
135,687.08/187,220.21 = 78,325.49/x - Step 3: Cross multiply
135,687.08x = 187,220.21 × 78,325.49 - Step 4: Simplify right side
135,687.08x = 14,664,113,358.42 - Step 5: Solve for x
x = 14,664,113,358.42/135,687.08 - Step 6: Final answer
x = 108,073.03
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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.