Finding the Fourth Proportional to 135,037.70, 186,353.97 and 74,609.73
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Solution
The fourth proportional to 135,037.70, 186,353.97 and 74,609.73 is: 102,962.51
Step by Step Solution
- Step 1: Write the proportion equation
135,037.70 : 186,353.97 = 74,609.73 : x - Step 2: Convert to fraction form
135,037.70/186,353.97 = 74,609.73/x - Step 3: Cross multiply
135,037.70x = 186,353.97 × 74,609.73 - Step 4: Simplify right side
135,037.70x = 13,903,819,386.13 - Step 5: Solve for x
x = 13,903,819,386.13/135,037.70 - Step 6: Final answer
x = 102,962.51
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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.