Finding the Fourth Proportional to 147,906.70, 221,860.05 and 84,921.10
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Solution
The fourth proportional to 147,906.70, 221,860.05 and 84,921.10 is: 127,381.65
Step by Step Solution
- Step 1: Write the proportion equation
147,906.70 : 221,860.05 = 84,921.10 : x - Step 2: Convert to fraction form
147,906.70/221,860.05 = 84,921.10/x - Step 3: Cross multiply
147,906.70x = 221,860.05 × 84,921.10 - Step 4: Simplify right side
147,906.70x = 18,840,599,492.06 - Step 5: Solve for x
x = 18,840,599,492.06/147,906.70 - Step 6: Final answer
x = 127,381.65
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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.