Finding the Fourth Proportional to 138,434.99, 207,350.87 and 90,996.53
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Solution
The fourth proportional to 138,434.99, 207,350.87 and 90,996.53 is: 136,296.53
Step by Step Solution
- Step 1: Write the proportion equation
138,434.99 : 207,350.87 = 90,996.53 : x - Step 2: Convert to fraction form
138,434.99/207,350.87 = 90,996.53/x - Step 3: Cross multiply
138,434.99x = 207,350.87 × 90,996.53 - Step 4: Simplify right side
138,434.99x = 18,868,208,170.74 - Step 5: Solve for x
x = 18,868,208,170.74/138,434.99 - Step 6: Final answer
x = 136,296.53
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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.