Finding the Fourth Proportional to 147,763.08, 221,972.67 and 91,644.66
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Solution
The fourth proportional to 147,763.08, 221,972.67 and 91,644.66 is: 137,670.45
Step by Step Solution
- Step 1: Write the proportion equation
147,763.08 : 221,972.67 = 91,644.66 : x - Step 2: Convert to fraction form
147,763.08/221,972.67 = 91,644.66/x - Step 3: Cross multiply
147,763.08x = 221,972.67 × 91,644.66 - Step 4: Simplify right side
147,763.08x = 20,342,609,871.44 - Step 5: Solve for x
x = 20,342,609,871.44/147,763.08 - Step 6: Final answer
x = 137,670.45
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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.