Finding the Fourth Proportional to 130,198.80, 179,675.76 and 76,486.08
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Solution
The fourth proportional to 130,198.80, 179,675.76 and 76,486.08 is: 105,551.62
Step by Step Solution
- Step 1: Write the proportion equation
130,198.80 : 179,675.76 = 76,486.08 : x - Step 2: Convert to fraction form
130,198.80/179,675.76 = 76,486.08/x - Step 3: Cross multiply
130,198.80x = 179,675.76 × 76,486.08 - Step 4: Simplify right side
130,198.80x = 13,742,694,553.42 - Step 5: Solve for x
x = 13,742,694,553.42/130,198.80 - Step 6: Final answer
x = 105,551.62
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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.