Finding the Fourth Proportional to 128,519.53, 177,266.79 and 89,692.53
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Solution
The fourth proportional to 128,519.53, 177,266.79 and 89,692.53 is: 123,712.77
Step by Step Solution
- Step 1: Write the proportion equation
128,519.53 : 177,266.79 = 89,692.53 : x - Step 2: Convert to fraction form
128,519.53/177,266.79 = 89,692.53/x - Step 3: Cross multiply
128,519.53x = 177,266.79 × 89,692.53 - Step 4: Simplify right side
128,519.53x = 15,899,506,880.08 - Step 5: Solve for x
x = 15,899,506,880.08/128,519.53 - Step 6: Final answer
x = 123,712.77
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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.