Finding the Fourth Proportional to 143,341.92, 197,807.94 and 79,678.08
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Solution
The fourth proportional to 143,341.92, 197,807.94 and 79,678.08 is: 109,953.58
Step by Step Solution
- Step 1: Write the proportion equation
143,341.92 : 197,807.94 = 79,678.08 : x - Step 2: Convert to fraction form
143,341.92/197,807.94 = 79,678.08/x - Step 3: Cross multiply
143,341.92x = 197,807.94 × 79,678.08 - Step 4: Simplify right side
143,341.92x = 15,760,956,867.96 - Step 5: Solve for x
x = 15,760,956,867.96/143,341.92 - Step 6: Final answer
x = 109,953.58
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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.