Finding the Fourth Proportional to 153,920.80, 230,686.80 and 74,864.80
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Solution
The fourth proportional to 153,920.80, 230,686.80 and 74,864.80 is: 112,202.65
Step by Step Solution
- Step 1: Write the proportion equation
153,920.80 : 230,686.80 = 74,864.80 : x - Step 2: Convert to fraction form
153,920.80/230,686.80 = 74,864.80/x - Step 3: Cross multiply
153,920.80x = 230,686.80 × 74,864.80 - Step 4: Simplify right side
153,920.80x = 17,270,321,144.64 - Step 5: Solve for x
x = 17,270,321,144.64/153,920.80 - Step 6: Final answer
x = 112,202.65
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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.