Finding the Fourth Proportional to 251,699.79, 347,352.69 and 136,979.49
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Solution
The fourth proportional to 251,699.79, 347,352.69 and 136,979.49 is: 189,035.49
Step by Step Solution
- Step 1: Write the proportion equation
251,699.79 : 347,352.69 = 136,979.49 : x - Step 2: Convert to fraction form
251,699.79/347,352.69 = 136,979.49/x - Step 3: Cross multiply
251,699.79x = 347,352.69 × 136,979.49 - Step 4: Simplify right side
251,699.79x = 47,580,194,326.33 - Step 5: Solve for x
x = 47,580,194,326.33/251,699.79 - Step 6: Final answer
x = 189,035.49
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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.