Finding the Fourth Proportional to 121,605.54, 167,785.98 and 71,294.82
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Solution
The fourth proportional to 121,605.54, 167,785.98 and 71,294.82 is: 98,369.46
Step by Step Solution
- Step 1: Write the proportion equation
121,605.54 : 167,785.98 = 71,294.82 : x - Step 2: Convert to fraction form
121,605.54/167,785.98 = 71,294.82/x - Step 3: Cross multiply
121,605.54x = 167,785.98 × 71,294.82 - Step 4: Simplify right side
121,605.54x = 11,962,271,242.62 - Step 5: Solve for x
x = 11,962,271,242.62/121,605.54 - Step 6: Final answer
x = 98,369.46
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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.