Finding the Fourth Proportional to 122,420.20, 183,630.30 and 121,642.60
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Solution
The fourth proportional to 122,420.20, 183,630.30 and 121,642.60 is: 182,463.90
Step by Step Solution
- Step 1: Write the proportion equation
122,420.20 : 183,630.30 = 121,642.60 : x - Step 2: Convert to fraction form
122,420.20/183,630.30 = 121,642.60/x - Step 3: Cross multiply
122,420.20x = 183,630.30 × 121,642.60 - Step 4: Simplify right side
122,420.20x = 22,337,267,130.78 - Step 5: Solve for x
x = 22,337,267,130.78/122,420.20 - Step 6: Final answer
x = 182,463.90
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1.5x scale
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.