Finding the Fourth Proportional to 135,283.36, 186,648.72 and 81,584.80
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Solution
The fourth proportional to 135,283.36, 186,648.72 and 81,584.80 is: 112,561.50
Step by Step Solution
- Step 1: Write the proportion equation
135,283.36 : 186,648.72 = 81,584.80 : x - Step 2: Convert to fraction form
135,283.36/186,648.72 = 81,584.80/x - Step 3: Cross multiply
135,283.36x = 186,648.72 × 81,584.80 - Step 4: Simplify right side
135,283.36x = 15,227,698,491.46 - Step 5: Solve for x
x = 15,227,698,491.46/135,283.36 - Step 6: Final answer
x = 112,561.50
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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.