Finding the Fourth Proportional to 122,572.80, 183,859.20 and 86,803.20
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Solution
The fourth proportional to 122,572.80, 183,859.20 and 86,803.20 is: 130,204.80
Step by Step Solution
- Step 1: Write the proportion equation
122,572.80 : 183,859.20 = 86,803.20 : x - Step 2: Convert to fraction form
122,572.80/183,859.20 = 86,803.20/x - Step 3: Cross multiply
122,572.80x = 183,859.20 × 86,803.20 - Step 4: Simplify right side
122,572.80x = 15,959,566,909.44 - Step 5: Solve for x
x = 15,959,566,909.44/122,572.80 - Step 6: Final answer
x = 130,204.80
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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.