Finding the Fourth Proportional to 99,230.10, 136,937.70 and 53,908.26
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Solution
The fourth proportional to 99,230.10, 136,937.70 and 53,908.26 is: 74,393.49
Step by Step Solution
- Step 1: Write the proportion equation
99,230.10 : 136,937.70 = 53,908.26 : x - Step 2: Convert to fraction form
99,230.10/136,937.70 = 53,908.26/x - Step 3: Cross multiply
99,230.10x = 136,937.70 × 53,908.26 - Step 4: Simplify right side
99,230.10x = 7,382,073,135.40 - Step 5: Solve for x
x = 7,382,073,135.40/99,230.10 - Step 6: Final answer
x = 74,393.49
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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.