Finding the Fourth Proportional to 129,492.54, 194,220.36 and 40,743.74
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Solution
The fourth proportional to 129,492.54, 194,220.36 and 40,743.74 is: 61,109.80
Step by Step Solution
- Step 1: Write the proportion equation
129,492.54 : 194,220.36 = 40,743.74 : x - Step 2: Convert to fraction form
129,492.54/194,220.36 = 40,743.74/x - Step 3: Cross multiply
129,492.54x = 194,220.36 × 40,743.74 - Step 4: Simplify right side
129,492.54x = 7,913,263,971.93 - Step 5: Solve for x
x = 7,913,263,971.93/129,492.54 - Step 6: Final answer
x = 61,109.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.