Finding the Fourth Proportional to 121,311.36, 167,304.96 and 78,854.40
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Solution
The fourth proportional to 121,311.36, 167,304.96 and 78,854.40 is: 108,751.00
Step by Step Solution
- Step 1: Write the proportion equation
121,311.36 : 167,304.96 = 78,854.40 : x - Step 2: Convert to fraction form
121,311.36/167,304.96 = 78,854.40/x - Step 3: Cross multiply
121,311.36x = 167,304.96 × 78,854.40 - Step 4: Simplify right side
121,311.36x = 13,192,732,237.82 - Step 5: Solve for x
x = 13,192,732,237.82/121,311.36 - Step 6: Final answer
x = 108,751.00
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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.