Finding the Fourth Proportional to 129,655.80, 194,483.70 and 31,159.80
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Solution
The fourth proportional to 129,655.80, 194,483.70 and 31,159.80 is: 46,739.70
Step by Step Solution
- Step 1: Write the proportion equation
129,655.80 : 194,483.70 = 31,159.80 : x - Step 2: Convert to fraction form
129,655.80/194,483.70 = 31,159.80/x - Step 3: Cross multiply
129,655.80x = 194,483.70 × 31,159.80 - Step 4: Simplify right side
129,655.80x = 6,060,073,195.26 - Step 5: Solve for x
x = 6,060,073,195.26/129,655.80 - Step 6: Final answer
x = 46,739.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.