Finding the Fourth Proportional to 135,699.09, 187,142.18 and 84,716.54
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Solution
The fourth proportional to 135,699.09, 187,142.18 and 84,716.54 is: 116,832.31
Step by Step Solution
- Step 1: Write the proportion equation
135,699.09 : 187,142.18 = 84,716.54 : x - Step 2: Convert to fraction form
135,699.09/187,142.18 = 84,716.54/x - Step 3: Cross multiply
135,699.09x = 187,142.18 × 84,716.54 - Step 4: Simplify right side
135,699.09x = 15,854,038,021.93 - Step 5: Solve for x
x = 15,854,038,021.93/135,699.09 - Step 6: Final answer
x = 116,832.31
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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.