Finding the Fourth Proportional to 124,995.68, 172,434.40 and 77,231.84
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Solution
The fourth proportional to 124,995.68, 172,434.40 and 77,231.84 is: 106,543.09
Step by Step Solution
- Step 1: Write the proportion equation
124,995.68 : 172,434.40 = 77,231.84 : x - Step 2: Convert to fraction form
124,995.68/172,434.40 = 77,231.84/x - Step 3: Cross multiply
124,995.68x = 172,434.40 × 77,231.84 - Step 4: Simplify right side
124,995.68x = 13,317,425,991.30 - Step 5: Solve for x
x = 13,317,425,991.30/124,995.68 - Step 6: Final answer
x = 106,543.09
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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.