Finding the Fourth Proportional to 112,699.99, 155,515.21 and 67,368.97
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Solution
The fourth proportional to 112,699.99, 155,515.21 and 67,368.97 is: 92,962.74
Step by Step Solution
- Step 1: Write the proportion equation
112,699.99 : 155,515.21 = 67,368.97 : x - Step 2: Convert to fraction form
112,699.99/155,515.21 = 67,368.97/x - Step 3: Cross multiply
112,699.99x = 155,515.21 × 67,368.97 - Step 4: Simplify right side
112,699.99x = 10,476,899,517.03 - Step 5: Solve for x
x = 10,476,899,517.03/112,699.99 - Step 6: Final answer
x = 92,962.74
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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.