Finding the Fourth Proportional to 158,220.84, 218,342.91 and 85,622.05
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Solution
The fourth proportional to 158,220.84, 218,342.91 and 85,622.05 is: 118,157.43
Step by Step Solution
- Step 1: Write the proportion equation
158,220.84 : 218,342.91 = 85,622.05 : x - Step 2: Convert to fraction form
158,220.84/218,342.91 = 85,622.05/x - Step 3: Cross multiply
158,220.84x = 218,342.91 × 85,622.05 - Step 4: Simplify right side
158,220.84x = 18,694,967,129.06 - Step 5: Solve for x
x = 18,694,967,129.06/158,220.84 - Step 6: Final answer
x = 118,157.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.