Finding the Fourth Proportional to 153,958.80, 230,971.80 and 87,430.80
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Solution
The fourth proportional to 153,958.80, 230,971.80 and 87,430.80 is: 131,165.28
Step by Step Solution
- Step 1: Write the proportion equation
153,958.80 : 230,971.80 = 87,430.80 : x - Step 2: Convert to fraction form
153,958.80/230,971.80 = 87,430.80/x - Step 3: Cross multiply
153,958.80x = 230,971.80 × 87,430.80 - Step 4: Simplify right side
153,958.80x = 20,194,049,251.44 - Step 5: Solve for x
x = 20,194,049,251.44/153,958.80 - Step 6: Final answer
x = 131,165.28
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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.