Finding the Fourth Proportional to 129,699.99, 193,260.68 and 115,551.32
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Solution
The fourth proportional to 129,699.99, 193,260.68 and 115,551.32 is: 172,178.31
Step by Step Solution
- Step 1: Write the proportion equation
129,699.99 : 193,260.68 = 115,551.32 : x - Step 2: Convert to fraction form
129,699.99/193,260.68 = 115,551.32/x - Step 3: Cross multiply
129,699.99x = 193,260.68 × 115,551.32 - Step 4: Simplify right side
129,699.99x = 22,331,525,134.04 - Step 5: Solve for x
x = 22,331,525,134.04/129,699.99 - Step 6: Final answer
x = 172,178.31
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.