Finding the Fourth Proportional to 135,037.78, 186,349.86 and 74,610.94
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Solution
The fourth proportional to 135,037.78, 186,349.86 and 74,610.94 is: 102,961.84
Step by Step Solution
- Step 1: Write the proportion equation
135,037.78 : 186,349.86 = 74,610.94 : x - Step 2: Convert to fraction form
135,037.78/186,349.86 = 74,610.94/x - Step 3: Cross multiply
135,037.78x = 186,349.86 × 74,610.94 - Step 4: Simplify right side
135,037.78x = 13,903,738,223.47 - Step 5: Solve for x
x = 13,903,738,223.47/135,037.78 - Step 6: Final answer
x = 102,961.84
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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.