Finding the Fourth Proportional to 138,708.31, 208,101.35 and 55,660.63
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Solution
The fourth proportional to 138,708.31, 208,101.35 and 55,660.63 is: 83,506.55
Step by Step Solution
- Step 1: Write the proportion equation
138,708.31 : 208,101.35 = 55,660.63 : x - Step 2: Convert to fraction form
138,708.31/208,101.35 = 55,660.63/x - Step 3: Cross multiply
138,708.31x = 208,101.35 × 55,660.63 - Step 4: Simplify right side
138,708.31x = 11,583,052,244.85 - Step 5: Solve for x
x = 11,583,052,244.85/138,708.31 - Step 6: Final answer
x = 83,506.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.