Finding the Fourth Proportional to 158,369.13, 218,466.54 and 97,920.45
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Solution
The fourth proportional to 158,369.13, 218,466.54 and 97,920.45 is: 135,078.99
Step by Step Solution
- Step 1: Write the proportion equation
158,369.13 : 218,466.54 = 97,920.45 : x - Step 2: Convert to fraction form
158,369.13/218,466.54 = 97,920.45/x - Step 3: Cross multiply
158,369.13x = 218,466.54 × 97,920.45 - Step 4: Simplify right side
158,369.13x = 21,392,341,906.74 - Step 5: Solve for x
x = 21,392,341,906.74/158,369.13 - Step 6: Final answer
x = 135,078.99
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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.