Finding the Fourth Proportional to 147,675.12, 221,374.44 and 81,872.88
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Solution
The fourth proportional to 147,675.12, 221,374.44 and 81,872.88 is: 122,732.68
Step by Step Solution
- Step 1: Write the proportion equation
147,675.12 : 221,374.44 = 81,872.88 : x - Step 2: Convert to fraction form
147,675.12/221,374.44 = 81,872.88/x - Step 3: Cross multiply
147,675.12x = 221,374.44 × 81,872.88 - Step 4: Simplify right side
147,675.12x = 18,124,562,961.19 - Step 5: Solve for x
x = 18,124,562,961.19/147,675.12 - Step 6: Final answer
x = 122,732.68
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1.5x scale
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.