Finding the Fourth Proportional to 134,863.94, 186,109.70 and 74,431.05
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Solution
The fourth proportional to 134,863.94, 186,109.70 and 74,431.05 is: 102,713.45
Step by Step Solution
- Step 1: Write the proportion equation
134,863.94 : 186,109.70 = 74,431.05 : x - Step 2: Convert to fraction form
134,863.94/186,109.70 = 74,431.05/x - Step 3: Cross multiply
134,863.94x = 186,109.70 × 74,431.05 - Step 4: Simplify right side
134,863.94x = 13,852,340,014.03 - Step 5: Solve for x
x = 13,852,340,014.03/134,863.94 - Step 6: Final answer
x = 102,713.45
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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.