Finding the Fourth Proportional to 113,902.84, 157,238.94 and 66,146.98
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Solution
The fourth proportional to 113,902.84, 157,238.94 and 66,146.98 is: 91,313.62
Step by Step Solution
- Step 1: Write the proportion equation
113,902.84 : 157,238.94 = 66,146.98 : x - Step 2: Convert to fraction form
113,902.84/157,238.94 = 66,146.98/x - Step 3: Cross multiply
113,902.84x = 157,238.94 × 66,146.98 - Step 4: Simplify right side
113,902.84x = 10,400,881,019.40 - Step 5: Solve for x
x = 10,400,881,019.40/113,902.84 - Step 6: Final answer
x = 91,313.62
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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.