Finding the Fourth Proportional to 207,873.18, 286,864.74 and 112,379.58
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Solution
The fourth proportional to 207,873.18, 286,864.74 and 112,379.58 is: 155,083.69
Step by Step Solution
- Step 1: Write the proportion equation
207,873.18 : 286,864.74 = 112,379.58 : x - Step 2: Convert to fraction form
207,873.18/286,864.74 = 112,379.58/x - Step 3: Cross multiply
207,873.18x = 286,864.74 × 112,379.58 - Step 4: Simplify right side
207,873.18x = 32,237,738,998.01 - Step 5: Solve for x
x = 32,237,738,998.01/207,873.18 - Step 6: Final answer
x = 155,083.69
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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.