Finding the Fourth Proportional to 135,239.31, 186,652.49 and 78,683.49
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Solution
The fourth proportional to 135,239.31, 186,652.49 and 78,683.49 is: 108,596.15
Step by Step Solution
- Step 1: Write the proportion equation
135,239.31 : 186,652.49 = 78,683.49 : x - Step 2: Convert to fraction form
135,239.31/186,652.49 = 78,683.49/x - Step 3: Cross multiply
135,239.31x = 186,652.49 × 78,683.49 - Step 4: Simplify right side
135,239.31x = 14,686,468,936.97 - Step 5: Solve for x
x = 14,686,468,936.97/135,239.31 - Step 6: Final answer
x = 108,596.15
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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.