Finding the Fourth Proportional to 138,835.74, 208,227.26 and 67,686.96
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Solution
The fourth proportional to 138,835.74, 208,227.26 and 67,686.96 is: 101,517.59
Step by Step Solution
- Step 1: Write the proportion equation
138,835.74 : 208,227.26 = 67,686.96 : x - Step 2: Convert to fraction form
138,835.74/208,227.26 = 67,686.96/x - Step 3: Cross multiply
138,835.74x = 208,227.26 × 67,686.96 - Step 4: Simplify right side
138,835.74x = 14,094,270,218.53 - Step 5: Solve for x
x = 14,094,270,218.53/138,835.74 - Step 6: Final answer
x = 101,517.59
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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.