Finding the Fourth Proportional to 153,690.80, 230,536.20 and 91,329.20
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Solution
The fourth proportional to 153,690.80, 230,536.20 and 91,329.20 is: 136,993.80
Step by Step Solution
- Step 1: Write the proportion equation
153,690.80 : 230,536.20 = 91,329.20 : x - Step 2: Convert to fraction form
153,690.80/230,536.20 = 91,329.20/x - Step 3: Cross multiply
153,690.80x = 230,536.20 × 91,329.20 - Step 4: Simplify right side
153,690.80x = 21,054,686,717.04 - Step 5: Solve for x
x = 21,054,686,717.04/153,690.80 - Step 6: Final answer
x = 136,993.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.