Finding the Fourth Proportional to 139,149.07, 208,719.49 and 120,373.67
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Solution
The fourth proportional to 139,149.07, 208,719.49 and 120,373.67 is: 180,556.95
Step by Step Solution
- Step 1: Write the proportion equation
139,149.07 : 208,719.49 = 120,373.67 : x - Step 2: Convert to fraction form
139,149.07/208,719.49 = 120,373.67/x - Step 3: Cross multiply
139,149.07x = 208,719.49 × 120,373.67 - Step 4: Simplify right side
139,149.07x = 25,124,331,011.83 - Step 5: Solve for x
x = 25,124,331,011.83/139,149.07 - Step 6: Final answer
x = 180,556.95
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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.