Finding the Fourth Proportional to 189,521.84, 261,540.63 and 103,480.94
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Solution
The fourth proportional to 189,521.84, 261,540.63 and 103,480.94 is: 142,803.96
Step by Step Solution
- Step 1: Write the proportion equation
189,521.84 : 261,540.63 = 103,480.94 : x - Step 2: Convert to fraction form
189,521.84/261,540.63 = 103,480.94/x - Step 3: Cross multiply
189,521.84x = 261,540.63 × 103,480.94 - Step 4: Simplify right side
189,521.84x = 27,064,468,932.89 - Step 5: Solve for x
x = 27,064,468,932.89/189,521.84 - Step 6: Final answer
x = 142,803.96
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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.