Finding the Fourth Proportional to 147,642.20, 221,463.30 and 54,135.80
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Solution
The fourth proportional to 147,642.20, 221,463.30 and 54,135.80 is: 81,203.70
Step by Step Solution
- Step 1: Write the proportion equation
147,642.20 : 221,463.30 = 54,135.80 : x - Step 2: Convert to fraction form
147,642.20/221,463.30 = 54,135.80/x - Step 3: Cross multiply
147,642.20x = 221,463.30 × 54,135.80 - Step 4: Simplify right side
147,642.20x = 11,989,092,916.14 - Step 5: Solve for x
x = 11,989,092,916.14/147,642.20 - Step 6: Final answer
x = 81,203.70
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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.