Finding the Fourth Proportional to 121,106.75, 181,689.30 and 38,000.75
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Solution
The fourth proportional to 121,106.75, 181,689.30 and 38,000.75 is: 57,010.28
Step by Step Solution
- Step 1: Write the proportion equation
121,106.75 : 181,689.30 = 38,000.75 : x - Step 2: Convert to fraction form
121,106.75/181,689.30 = 38,000.75/x - Step 3: Cross multiply
121,106.75x = 181,689.30 × 38,000.75 - Step 4: Simplify right side
121,106.75x = 6,904,329,666.98 - Step 5: Solve for x
x = 6,904,329,666.98/121,106.75 - Step 6: Final answer
x = 57,010.28
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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.