Finding the Fourth Proportional to 135,145.05, 186,485.88 and 74,705.95
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Solution
The fourth proportional to 135,145.05, 186,485.88 and 74,705.95 is: 103,086.31
Step by Step Solution
- Step 1: Write the proportion equation
135,145.05 : 186,485.88 = 74,705.95 : x - Step 2: Convert to fraction form
135,145.05/186,485.88 = 74,705.95/x - Step 3: Cross multiply
135,145.05x = 186,485.88 × 74,705.95 - Step 4: Simplify right side
135,145.05x = 13,931,604,826.99 - Step 5: Solve for x
x = 13,931,604,826.99/135,145.05 - Step 6: Final answer
x = 103,086.31
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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.