Finding the Fourth Proportional to 118,811.30, 163,959.57 and 71,075.88
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Solution
The fourth proportional to 118,811.30, 163,959.57 and 71,075.88 is: 98,084.70
Step by Step Solution
- Step 1: Write the proportion equation
118,811.30 : 163,959.57 = 71,075.88 : x - Step 2: Convert to fraction form
118,811.30/163,959.57 = 71,075.88/x - Step 3: Cross multiply
118,811.30x = 163,959.57 × 71,075.88 - Step 4: Simplify right side
118,811.30x = 11,653,570,722.17 - Step 5: Solve for x
x = 11,653,570,722.17/118,811.30 - Step 6: Final answer
x = 98,084.70
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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.