Finding the Fourth Proportional to 158,230.99, 218,359.09 and 86,615.58
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Solution
The fourth proportional to 158,230.99, 218,359.09 and 86,615.58 is: 119,529.68
Step by Step Solution
- Step 1: Write the proportion equation
158,230.99 : 218,359.09 = 86,615.58 : x - Step 2: Convert to fraction form
158,230.99/218,359.09 = 86,615.58/x - Step 3: Cross multiply
158,230.99x = 218,359.09 × 86,615.58 - Step 4: Simplify right side
158,230.99x = 18,913,299,228.62 - Step 5: Solve for x
x = 18,913,299,228.62/158,230.99 - Step 6: Final answer
x = 119,529.68
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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.