Finding the Fourth Proportional to 124,936.71, 172,412.87 and 73,990.54
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Solution
The fourth proportional to 124,936.71, 172,412.87 and 73,990.54 is: 102,107.07
Step by Step Solution
- Step 1: Write the proportion equation
124,936.71 : 172,412.87 = 73,990.54 : x - Step 2: Convert to fraction form
124,936.71/172,412.87 = 73,990.54/x - Step 3: Cross multiply
124,936.71x = 172,412.87 × 73,990.54 - Step 4: Simplify right side
124,936.71x = 12,756,921,354.25 - Step 5: Solve for x
x = 12,756,921,354.25/124,936.71 - Step 6: Final answer
x = 102,107.07
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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.