Finding the Fourth Proportional to 129,666.80, 178,766.88 and 97,263.68
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Solution
The fourth proportional to 129,666.80, 178,766.88 and 97,263.68 is: 134,093.88
Step by Step Solution
- Step 1: Write the proportion equation
129,666.80 : 178,766.88 = 97,263.68 : x - Step 2: Convert to fraction form
129,666.80/178,766.88 = 97,263.68/x - Step 3: Cross multiply
129,666.80x = 178,766.88 × 97,263.68 - Step 4: Simplify right side
129,666.80x = 17,387,524,610.92 - Step 5: Solve for x
x = 17,387,524,610.92/129,666.80 - Step 6: Final answer
x = 134,093.88
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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.