Finding the Fourth Proportional to 147,708.96, 221,311.36 and 81,204.80
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Solution
The fourth proportional to 147,708.96, 221,311.36 and 81,204.80 is: 121,668.62
Step by Step Solution
- Step 1: Write the proportion equation
147,708.96 : 221,311.36 = 81,204.80 : x - Step 2: Convert to fraction form
147,708.96/221,311.36 = 81,204.80/x - Step 3: Cross multiply
147,708.96x = 221,311.36 × 81,204.80 - Step 4: Simplify right side
147,708.96x = 17,971,544,726.53 - Step 5: Solve for x
x = 17,971,544,726.53/147,708.96 - Step 6: Final answer
x = 121,668.62
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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.