Finding the Fourth Proportional to 117,239.77, 175,715.34 and 66,681.19
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Solution
The fourth proportional to 117,239.77, 175,715.34 and 66,681.19 is: 99,939.70
Step by Step Solution
- Step 1: Write the proportion equation
117,239.77 : 175,715.34 = 66,681.19 : x - Step 2: Convert to fraction form
117,239.77/175,715.34 = 66,681.19/x - Step 3: Cross multiply
117,239.77x = 175,715.34 × 66,681.19 - Step 4: Simplify right side
117,239.77x = 11,716,907,972.45 - Step 5: Solve for x
x = 11,716,907,972.45/117,239.77 - Step 6: Final answer
x = 99,939.70
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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.