Finding the Fourth Proportional to 189,729.41, 261,831.57 and 103,692.02
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Solution
The fourth proportional to 189,729.41, 261,831.57 and 103,692.02 is: 143,097.71
Step by Step Solution
- Step 1: Write the proportion equation
189,729.41 : 261,831.57 = 103,692.02 : x - Step 2: Convert to fraction form
189,729.41/261,831.57 = 103,692.02/x - Step 3: Cross multiply
189,729.41x = 261,831.57 × 103,692.02 - Step 4: Simplify right side
189,729.41x = 27,149,844,393.07 - Step 5: Solve for x
x = 27,149,844,393.07/189,729.41 - Step 6: Final answer
x = 143,097.71
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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.