Finding the Fourth Proportional to 155,187.20, 214,186.24 and 91,521.28
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Solution
The fourth proportional to 155,187.20, 214,186.24 and 91,521.28 is: 126,315.82
Step by Step Solution
- Step 1: Write the proportion equation
155,187.20 : 214,186.24 = 91,521.28 : x - Step 2: Convert to fraction form
155,187.20/214,186.24 = 91,521.28/x - Step 3: Cross multiply
155,187.20x = 214,186.24 × 91,521.28 - Step 4: Simplify right side
155,187.20x = 19,602,598,843.19 - Step 5: Solve for x
x = 19,602,598,843.19/155,187.20 - Step 6: Final answer
x = 126,315.82
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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.