Finding the Fourth Proportional to 129,263.40, 178,393.86 and 97,381.80
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Solution
The fourth proportional to 129,263.40, 178,393.86 and 97,381.80 is: 134,394.69
Step by Step Solution
- Step 1: Write the proportion equation
129,263.40 : 178,393.86 = 97,381.80 : x - Step 2: Convert to fraction form
129,263.40/178,393.86 = 97,381.80/x - Step 3: Cross multiply
129,263.40x = 178,393.86 × 97,381.80 - Step 4: Simplify right side
129,263.40x = 17,372,315,195.75 - Step 5: Solve for x
x = 17,372,315,195.75/129,263.40 - Step 6: Final answer
x = 134,394.69
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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.