Finding the Fourth Proportional to 99,150.18, 136,821.66 and 57,769.74
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Solution
The fourth proportional to 99,150.18, 136,821.66 and 57,769.74 is: 79,718.99
Step by Step Solution
- Step 1: Write the proportion equation
99,150.18 : 136,821.66 = 57,769.74 : x - Step 2: Convert to fraction form
99,150.18/136,821.66 = 57,769.74/x - Step 3: Cross multiply
99,150.18x = 136,821.66 × 57,769.74 - Step 4: Simplify right side
99,150.18x = 7,904,151,507.93 - Step 5: Solve for x
x = 7,904,151,507.93/99,150.18 - Step 6: Final answer
x = 79,718.99
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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.