Finding the Fourth Proportional to 149,679.76, 206,554.98 and 81,698.08
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Solution
The fourth proportional to 149,679.76, 206,554.98 and 81,698.08 is: 112,741.66
Step by Step Solution
- Step 1: Write the proportion equation
149,679.76 : 206,554.98 = 81,698.08 : x - Step 2: Convert to fraction form
149,679.76/206,554.98 = 81,698.08/x - Step 3: Cross multiply
149,679.76x = 206,554.98 × 81,698.08 - Step 4: Simplify right side
149,679.76x = 16,875,145,280.44 - Step 5: Solve for x
x = 16,875,145,280.44/149,679.76 - Step 6: Final answer
x = 112,741.66
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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.