Finding the Fourth Proportional to 147,912.70, 221,869.05 and 84,927.10
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Solution
The fourth proportional to 147,912.70, 221,869.05 and 84,927.10 is: 127,390.65
Step by Step Solution
- Step 1: Write the proportion equation
147,912.70 : 221,869.05 = 84,927.10 : x - Step 2: Convert to fraction form
147,912.70/221,869.05 = 84,927.10/x - Step 3: Cross multiply
147,912.70x = 221,869.05 × 84,927.10 - Step 4: Simplify right side
147,912.70x = 18,842,694,996.26 - Step 5: Solve for x
x = 18,842,694,996.26/147,912.70 - Step 6: Final answer
x = 127,390.65
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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.