Finding the Fourth Proportional to 149,244.12, 205,958.70 and 81,260.82
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Solution
The fourth proportional to 149,244.12, 205,958.70 and 81,260.82 is: 112,140.92
Step by Step Solution
- Step 1: Write the proportion equation
149,244.12 : 205,958.70 = 81,260.82 : x - Step 2: Convert to fraction form
149,244.12/205,958.70 = 81,260.82/x - Step 3: Cross multiply
149,244.12x = 205,958.70 × 81,260.82 - Step 4: Simplify right side
149,244.12x = 16,736,372,848.13 - Step 5: Solve for x
x = 16,736,372,848.13/149,244.12 - Step 6: Final answer
x = 112,140.92
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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.