Finding the Fourth Proportional to 125,322.78, 187,955.28 and 74,736.06
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Solution
The fourth proportional to 125,322.78, 187,955.28 and 74,736.06 is: 112,086.86
Step by Step Solution
- Step 1: Write the proportion equation
125,322.78 : 187,955.28 = 74,736.06 : x - Step 2: Convert to fraction form
125,322.78/187,955.28 = 74,736.06/x - Step 3: Cross multiply
125,322.78x = 187,955.28 × 74,736.06 - Step 4: Simplify right side
125,322.78x = 14,047,037,083.40 - Step 5: Solve for x
x = 14,047,037,083.40/125,322.78 - Step 6: Final answer
x = 112,086.86
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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.