Finding the Fourth Proportional to 155,976.12, 215,051.76 and 130,171.68
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Solution
The fourth proportional to 155,976.12, 215,051.76 and 130,171.68 is: 179,473.94
Step by Step Solution
- Step 1: Write the proportion equation
155,976.12 : 215,051.76 = 130,171.68 : x - Step 2: Convert to fraction form
155,976.12/215,051.76 = 130,171.68/x - Step 3: Cross multiply
155,976.12x = 215,051.76 × 130,171.68 - Step 4: Simplify right side
155,976.12x = 27,993,648,886.16 - Step 5: Solve for x
x = 27,993,648,886.16/155,976.12 - Step 6: Final answer
x = 179,473.94
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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.