Finding the Fourth Proportional to 124,921.17, 187,081.47 and 71,451.09
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Solution
The fourth proportional to 124,921.17, 187,081.47 and 71,451.09 is: 107,004.88
Step by Step Solution
- Step 1: Write the proportion equation
124,921.17 : 187,081.47 = 71,451.09 : x - Step 2: Convert to fraction form
124,921.17/187,081.47 = 71,451.09/x - Step 3: Cross multiply
124,921.17x = 187,081.47 × 71,451.09 - Step 4: Simplify right side
124,921.17x = 13,367,174,950.30 - Step 5: Solve for x
x = 13,367,174,950.30/124,921.17 - Step 6: Final answer
x = 107,004.88
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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.