Finding the Fourth Proportional to 139,148.07, 208,717.99 and 120,372.67
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Solution
The fourth proportional to 139,148.07, 208,717.99 and 120,372.67 is: 180,555.45
Step by Step Solution
- Step 1: Write the proportion equation
139,148.07 : 208,717.99 = 120,372.67 : x - Step 2: Convert to fraction form
139,148.07/208,717.99 = 120,372.67/x - Step 3: Cross multiply
139,148.07x = 208,717.99 × 120,372.67 - Step 4: Simplify right side
139,148.07x = 25,123,941,733.33 - Step 5: Solve for x
x = 25,123,941,733.33/139,148.07 - Step 6: Final answer
x = 180,555.45
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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.