Finding the Fourth Proportional to 118,790.55, 163,933.88 and 65,075.70
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Solution
The fourth proportional to 118,790.55, 163,933.88 and 65,075.70 is: 89,806.07
Step by Step Solution
- Step 1: Write the proportion equation
118,790.55 : 163,933.88 = 65,075.70 : x - Step 2: Convert to fraction form
118,790.55/163,933.88 = 65,075.70/x - Step 3: Cross multiply
118,790.55x = 163,933.88 × 65,075.70 - Step 4: Simplify right side
118,790.55x = 10,668,112,284.09 - Step 5: Solve for x
x = 10,668,112,284.09/118,790.55 - Step 6: Final answer
x = 89,806.07
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1.5x scale
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.