Finding the Fourth Proportional to 117,307.80, 161,977.95 and 108,352.08
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Solution
The fourth proportional to 117,307.80, 161,977.95 and 108,352.08 is: 149,611.94
Step by Step Solution
- Step 1: Write the proportion equation
117,307.80 : 161,977.95 = 108,352.08 : x - Step 2: Convert to fraction form
117,307.80/161,977.95 = 108,352.08/x - Step 3: Cross multiply
117,307.80x = 161,977.95 × 108,352.08 - Step 4: Simplify right side
117,307.80x = 17,550,647,796.64 - Step 5: Solve for x
x = 17,550,647,796.64/117,307.80 - Step 6: Final answer
x = 149,611.94
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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.