Finding the Fourth Proportional to 208,147.14, 286,942.68 and 136,402.65
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Solution
The fourth proportional to 208,147.14, 286,942.68 and 136,402.65 is: 188,038.82
Step by Step Solution
- Step 1: Write the proportion equation
208,147.14 : 286,942.68 = 136,402.65 : x - Step 2: Convert to fraction form
208,147.14/286,942.68 = 136,402.65/x - Step 3: Cross multiply
208,147.14x = 286,942.68 × 136,402.65 - Step 4: Simplify right side
208,147.14x = 39,139,741,950.10 - Step 5: Solve for x
x = 39,139,741,950.10/208,147.14 - Step 6: Final answer
x = 188,038.82
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.